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PIC16F1938-I/SP (DIP-28) — Symbol, Footprint IPC-7351B & 3D STEP Model

PIC16F1938-I/SP

MICROCHIPID: C185807DIP-28 · 28 Pins · Pitch 2.54mmIPC-7351B Verified5.0 (0)
SYNCHRONIZED 4D CROSS-PROBE MODETouch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
1. SYMBOL
U1 · PIC16F1938-I/SP (DIP-28)1—2SEG123SEG74COM25SEG156SEG47SEG58SEG219SEG2210SEG2311—12—13SEG214SEG128SEG1827SEG1726SEG825SEG924SEG1023SEG1122SEG1621—20—19COM318SEG617SEG316—15—Grid Pitch = 2.54mm (IEEE-315)-17.8-12.7-7.6-2.52.57.612.717.822.917.812.77.62.5-2.5-7.6-12.7-17.8-22.9mm
2. 2D FOOTPRINT
12345678910111213141516171819202122232425262728E=6.35mm · Pitch e=2.54mmD=35.02mm-14-12-10-8-6-4-20246810121427252321191715131197531-1-3-5-7-9-11-13-15-17-19-21-23-25-27mm
3. 3D CAD MODEL
Package Body: 6.35mm × 35.02mm · Pitch: 2.54mm · Ruler Step: 1.00mmSynced <100ms

Synchronized Pinout (Symbol / 2D / 3D) (28/28)

Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
PinSymbolTypeFunction (EN)
1—I/OMultiplexed I/O & Peripheral Pin — (General)
2SEG12I/OMultiplexed I/O & Peripheral Pin SEG12 (General)
3SEG7I/OMultiplexed I/O & Peripheral Pin SEG7 (General)
4COM2I/OMultiplexed I/O & Peripheral Pin COM2 (General)
5SEG15I/OMultiplexed I/O & Peripheral Pin SEG15 (General)
6SEG4I/OMultiplexed I/O & Peripheral Pin SEG4 (General)
7SEG5I/OMultiplexed I/O & Peripheral Pin SEG5 (General)
8SEG21I/OMultiplexed I/O & Peripheral Pin SEG21 (General)
9SEG22I/OMultiplexed I/O & Peripheral Pin SEG22 (General)
10SEG23I/OMultiplexed I/O & Peripheral Pin SEG23 (General)
11—I/OMultiplexed I/O & Peripheral Pin — (General)
12—I/OMultiplexed I/O & Peripheral Pin — (General)
13SEG2I/OMultiplexed I/O & Peripheral Pin SEG2 (RTC/CLK)
14SEG1I/OMultiplexed I/O & Peripheral Pin SEG1 (RTC/CLK)
15—I/OMultiplexed I/O & Peripheral Pin — (General)
16—I/OMultiplexed I/O & Peripheral Pin — (General)
17SEG3I/OMultiplexed I/O & Peripheral Pin SEG3 (General)
18SEG6I/OMultiplexed I/O & Peripheral Pin SEG6 (General)
19COM3I/OMultiplexed I/O & Peripheral Pin COM3 (General)
20—I/OMultiplexed I/O & Peripheral Pin — (General)
21—I/OMultiplexed I/O & Peripheral Pin — (General)
22SEG16I/OMultiplexed I/O & Peripheral Pin SEG16 (General)
23SEG11I/OMultiplexed I/O & Peripheral Pin SEG11 (General)
24SEG10I/OMultiplexed I/O & Peripheral Pin SEG10 (General)
25SEG9I/OMultiplexed I/O & Peripheral Pin SEG9 (General)
26SEG8I/OMultiplexed I/O & Peripheral Pin SEG8 (General)
27SEG17I/OMultiplexed I/O & Peripheral Pin SEG17 (General)
28SEG18I/OMultiplexed I/O & Peripheral Pin SEG18 (General)
PIN 1 —
I/O
Multiplexed I/O & Peripheral Pin — (General)
Design note: MCLR/VPP
IPC-7351B Solder Density & Span C/G/Z Tuner

Live Embedded Datasheet PDF & Technical Drawing Gallery (6 Standard Drawings + 5 Extracted Figures)

Read the original datasheet PDF directly or click any drawing to view fullscreen
Open PDF in New Window ↗Read Datasheet PDF (.pdf)
PDF VIEWEROfficial Datasheet Document: PIC16F1938-I/SP (MICROCHIP · DIP-28)
Scroll, search text (Ctrl+F), or expand directly inside the embedded PDF reader below
1. Realistic 3D PackageREPRESENTATIVE
PIC16F1938-I/SP (DIP-28) - 1. Realistic 3D Package
Detailed solid 3D bodyExpand ›
2. Standard Pinout (Top View)CLEANROOM PINOUT
PIC16F1938-I/SP (DIP-28) - 2. Standard Pinout (Top View)
True package pinout (28 pins)Expand ›
3. Original Datasheet PinoutPDF PINOUT
PIC16F1938-I/SP (DIP-28) - 3. Original Datasheet Pinout
Uncropped datasheet pin diagramExpand ›
4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS
PIC16F1938-I/SP (DIP-28) - 4. Package Dimensions (D×E×A)
DIP-28 · 6.35×35.02mm · Pitch 2.54mmExpand ›
5. Recommended Land PatternLAND PATTERN
PIC16F1938-I/SP (DIP-28) - 5. Recommended Land Pattern
IPC-7351B Footprint (28 Pads)Expand ›
6. Application SchematicSCHEMATIC
PIC16F1938-I/SP (DIP-28) - 6. Application Schematic
Typical Application SchematicExpand ›
Original Datasheet Pinouts & Technical Drawings (5 figures · Page 1/1)
Showing 1–5 of 5 uncropped original figures for PIC16F1938
P1 · p01_fig01377×200px
PIC16F1938-I/SP (DIP-28) — 带LCD 驱动器的28/40/44 引脚
带LCD 驱动器的28/40/44 引脚
P61 · p61_fig011777×548px
PIC16F1938-I/SP (DIP-28) — 图5-2： 外部时钟（EC）模式工作 原理
图5-2： 外部时钟（EC）模式工作 原理
P63 · p63_fig011778×1684px
PIC16F1938-I/SP (DIP-28) — 图5-6： 外部RC 模式
图5-6： 外部RC 模式
P63 · p63_fig01P63
PIC16F1938-I/SP (DIP-28) — Datasheet Page 63 (p63_fig01)
Datasheet Page 63 (p63_fig01)
P151 · p151_fig011343×523px
PIC16F1938-I/SP (DIP-28) — 图15-2： 模数转换TAD 周期
图15-2： 模数转换TAD 周期

Technical Specifications & Part Details (PIC16F1938-I/SP)

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)
Standard Electronic & Interconnect Component
Detailed Overview:PIC16F1938-I/SP (DIP-28) is a 28-pin standard electronic & interconnect component featuring a 35.02 × 6.35 × 4.20 mm mechanical envelope (lead pitch e = 2.54 mm). Rated for 1.8V-5.5V supply operation across -40°C ~ +85°C (Industrial Grade) with integrated SPI, I2C, PWM, RTC/CLK interfaces.
Operating Supply VoltageV_CC / V_DD
1.8V-5.5V
Place 100nF + 10µF X7R decoupling capacitors < 2mm from supply pins
Ambient Operating TemperatureT_A
-40°C ~ +85°C (Industrial Grade)
Industrial temperature grade; T_J(max) = +125°C
Clock / RF Operating Frequencyf_CLK / f_RF
32 kHz
Extracted from authoritative PDF specification tables
Current & Power RatingI_OUT / I_CC
I_GPIO(max) = ±20 mA / pin | I_VDD(total) ≤ 150 mA
Observe per-pin absolute maximum current limits
Package Envelope (D × E × A)D × E × A
35.02 × 6.35 × 4.20 mm (A1=0.51 mm)
Package family: DIP (DIP-28)
Pin Count & Lead PitchN / e
28 Pins | Pitch e = 2.54 mm (100.0 mil)
Normalized to Center-to-Center Span C per IPC-7351B
Integrated Peripheral InterfacesBuses
SPI, I2C, PWM, RTC/CLK
Cross-linked with 4D Pinout & Schematic Symbol
Reflow & Moisture SensitivityIPC / MSL
IPC-7351B Level B | J-STD-020 (Peak 260°C) | MSL-3
60% windowed solder paste stencil on thermal EPAD
Engineering Safety Alert: Verify Pin-1 chamfer orientation on Top Silkscreen prior to SMT pick-and-place assembly.
Engineering Safety Alert: Connect exposed thermal pad (if present) to internal ground plane via 0.3mm stitched thermal vias.

5-Point Standards Verification

Automated compliance checks prior to export
5/5 PASS
IEEE-315 Symbol28 auto-grouped pins
OK
IPC-7351B Land Pattern28 pads · Pitch 2.54mm
OK
IPC-7525 60% Solder PasteReflow 1:1 Standard
OK
DFM Rules JLCPCB / PCBWayMin pad clearance: 0.25mm
OK
3D STEP AP214 & GLBAligned coordinate origin (0,0,0)
OK

Hardware Verification & Community Engineering Reviews

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet
5.00 PCB Verified

Mechanical Dimensions & Land Pattern (DIP-28)

Extracted from Datasheet & IPC-7351B Normalized
mm
Package Body (D × E)Nominal
35.02 × 6.35 mm
Height (A) & Pitch (e)IPC-7351B
A=4.20mm · e=2.54mm
Pad Size (W × L)Level B
1.60 × 1.60 mm
Pins / Total PadsTopology
28P / 28Pad (THT_DIP)

Recommended Companion BOM & Drop-In Equivalents

Passive external components per reference schematic and 1:1 pin-compatible alternatives
DFM READY
Designator / Replacement MPNValue / PackageFunction & PCB Layout Rule
N/A
BOM
Per application circuit
DIP-28
Size power & signal trace widths for rated load current following IPC-2221 clearance rules.

Technical Frequently Asked Questions (FAQ) — PIC16F1938-I/SP (DIP-28)

Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formats
IPC-7351B / IEEE-315

What is the Pinout and operating voltage specification of PIC16F1938-I/SP (DIP-28)?

Manufactured by MICROCHIP, the PIC16F1938-I/SP is housed in a DIP-28 package with 28 pins and a 2.54 mm lead pitch, supporting a VCC supply range of 1.8V-5.5V. Key pins include: 1 (—: Multiplexed I/O & Peripheral Pin — (General)), 2 (SEG12: Multiplexed I/O & Peripheral Pin SEG12 (General)), 3 (SEG7: Multiplexed I/O & Peripheral Pin SEG7 (General)), 4 (COM2: Multiplexed I/O & Peripheral Pin COM2 (General)), 5 (SEG15: Multiplexed I/O & Peripheral Pin SEG15 (General)), 6 (SEG4: Multiplexed I/O & Peripheral Pin SEG4 (General)).

What are the IPC-7351B PCB Footprint dimensions for PIC16F1938-I/SP?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), PIC16F1938-I/SP (DIP-28) has a nominal body envelope of 6.35 × 35.02 mm, pitch e = 2.54 mm, and 28 copper pads.

Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for PIC16F1938-I/SP?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for PIC16F1938-I/SP (MICROCHIP, DIP-28) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.

Static Reference Appendix: Pinout Table (28 pins) & PIC16F1938 Family VariantsExpand static table
Pin #Signal NameElectrical TypeFunctional Description & Design Notes
1—Digital_IOSignal terminal — (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: —. Supported peripheral buses: General.
2SEG12Digital_IOSignal terminal SEG12 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG12. Supported peripheral buses: General.
3SEG7Digital_IOSignal terminal SEG7 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG7. Supported peripheral buses: General.
4COM2Digital_IOSignal terminal COM2 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: COM2. Supported peripheral buses: General.
5SEG15Digital_IOSignal terminal SEG15 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG15. Supported peripheral buses: General.
6SEG4Digital_IOSignal terminal SEG4 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG4. Supported peripheral buses: General.
7SEG5Digital_IOSignal terminal SEG5 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG5. Supported peripheral buses: General.
8SEG21Digital_IOSignal terminal SEG21 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG21. Supported peripheral buses: General.
9SEG22Digital_IOSignal terminal SEG22 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG22. Supported peripheral buses: General.
10SEG23Digital_IOSignal terminal SEG23 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG23. Supported peripheral buses: General.
11—Digital_IOSignal terminal — (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: —. Supported peripheral buses: General.
12—Digital_IOSignal terminal — (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: —. Supported peripheral buses: General.
13SEG2Digital_IOSignal terminal SEG2 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG2. Supported peripheral buses: RTC/CLK.
14SEG1Digital_IOSignal terminal SEG1 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG1. Supported peripheral buses: RTC/CLK.
15—Digital_IOSignal terminal — (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: —. Supported peripheral buses: General.
16—Digital_IOSignal terminal — (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: —. Supported peripheral buses: General.
17SEG3Digital_IOSignal terminal SEG3 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG3. Supported peripheral buses: General.
18SEG6Digital_IOSignal terminal SEG6 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG6. Supported peripheral buses: General.
19COM3Digital_IOSignal terminal COM3 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: COM3. Supported peripheral buses: General.
20—Digital_IOSignal terminal — (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: —. Supported peripheral buses: General.
21—Digital_IOSignal terminal — (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: —. Supported peripheral buses: General.
22SEG16Digital_IOSignal terminal SEG16 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG16. Supported peripheral buses: General.
23SEG11Digital_IOSignal terminal SEG11 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG11. Supported peripheral buses: General.
24SEG10Digital_IOSignal terminal SEG10 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG10. Supported peripheral buses: General.
25SEG9Digital_IOSignal terminal SEG9 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG9. Supported peripheral buses: General.
26SEG8Digital_IOSignal terminal SEG8 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG8. Supported peripheral buses: General.
27SEG17Digital_IOSignal terminal SEG17 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG17. Supported peripheral buses: General.
28SEG18Digital_IOSignal terminal SEG18 (I/O, 1.8V-5.5V domain). Multiplexed alternate functions: SEG18. Supported peripheral buses: General.
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