PIC16C56-LPE/P - 1KB OTP 8-Bit MCU, 12 I/O, 18-PDIP | Microchip
MPN： PIC16C56-LPE/P ✗ 停產PIC16C56-LPE/P 概覽
A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, I/O peripherals, and clock generation logic on one die. Within the broader semiconductor taxonomy, an MCU is a type of embedded processor (hypernyms: microcontroller -> embedded processor -> microprocessor -> semiconductor). The PIC16C5X family specifically occupies the cost-optimized, OTP-programmable niche, sitting between discrete logic and flash-based modern PIC MCUs in terms of flexibility and unit cost.
Key differentiating specifications include the OTP (one-time-programmable) program memory, the EPROM-based die, a 12-bit-wide instruction word providing roughly 2:1 code compression versus competing 8-bit MCUs of its era, and the wide operating voltage range. The device also features an internal reset circuit, watchdog timer, power-on reset, and brown-out detection options depending on configuration bits.
The RISC architecture executes each instruction in a single cycle except for program branches, which take two cycles. This deterministic instruction timing simplifies real-time control loop design and improves interrupt response predictability versus accumulator-based 8-bit architectures of similar vintage.
Typical applications include low-cost consumer appliances, simple sensor interfaces, automotive body electronics (sub-systems), industrial timers and counters, and legacy embedded designs requiring OTP programming for cost or IP protection. The extended temperature range supports industrial and automotive under-hood deployments.
When designing with this device, note that OTP memory cannot be erased or rewritten, so firmware must be fully verified before programming. The "LPE" speed grade pairs a low-power oscillator domain with extended-temperature silicon, typically supporting clock rates up to the LP-domain maximum defined in the PIC16C5X datasheet family.
This page synthesizes distributor inventory, parametric comparisons against pin-compatible PIC16C5X siblings and flash-based successors, and practical design notes for migration off the obsolete EPROM die.
直接替換替代品，適用於 PIC16C56-LPE/P — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16C56-LPE/P （相同外形與佔位） — 差異在於 Program Memory Type, Package, Program Memory Size, Mounting Type, RoHS Status.
PIC16C56-LPI/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16C56-LP/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16C56-HSI/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16C56A-04E/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16F54-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16C56-LPE/P 最大額定值與電氣特性
| Series | PIC® 16C |
| Core Processor | PIC |
| Core Size | 8-bit |
| Program Memory Type | OTP (EPROM-based) |
| Program Memory Size | 1.5 KB (1K x 12) |
| RAM Size | 25 B |
| Number of I/O Pins | 12 |
| Supply Voltage Range | 3.0 V to 5.5 V (3.3 V / 5 V nominal) |
| Oscillator Type | External (LP oscillator variant) |
| 工作溫度範圍 | -40C to +125C (extended, "E" grade) |
| 封裝 | 18-pin PDIP (0.300 in / 7.62 mm) |
| 安裝類型 | Through-Hole (DIP) |
| Instruction Set | 33 single-word/single-cycle instructions |
| Instruction Width | 12 bits |
| Architecture | RISC |
| Speed Grade | LPE (Low-Power oscillator, Extended temp) |
| Peripherals | POR (Power-On Reset), WDT (Watchdog Timer, optional) |
PIC16C56-LPE/P 腳位配置
| 腳位 1 | RB0 — Port B bit 0 (digital I/O, bidirectional) |
| 腳位 2 | RB1 — Port B bit 1 (digital I/O, bidirectional) |
| 腳位 3 | RB2 — Port B bit 2 (digital I/O, bidirectional) |
| 腳位 4 | RB3 — Port B bit 3 (digital I/O, bidirectional) |
| 腳位 5 | RB4 — Port B bit 4 (digital I/O, bidirectional) |
| 腳位 6 | RB5 — Port B bit 5 (digital I/O, bidirectional) |
| 腳位 7 | RB6 — Port B bit 6 (digital I/O, bidirectional) |
| 腳位 8 | RB7 — Port B bit 7 (digital I/O, bidirectional) |
| 腳位 9 | OSC1 — Oscillator input (external crystal/RC) |
| 腳位 10 | OSC2 — Oscillator output (external crystal/RC) |
| 腳位 11 | RA0 — Port A bit 0 (digital I/O, bidirectional) |
| 腳位 12 | RA1 — Port A bit 1 (digital I/O, bidirectional) |
| 腳位 13 | RA2 — Port A bit 2 (digital I/O, bidirectional) |
| 腳位 14 | RA3 — Port A bit 3 (digital I/O, bidirectional) |
| 腳位 15 | MCLR/VPP — Master Clear (reset, active low) / Programming voltage input |
| 腳位 16 | T0CKI — Timer0 clock input (also RA4) |
| 腳位 17 | VDD — Positive supply voltage (3.0 V to 5.5 V) |
| 腳位 18 | VSS — Ground reference |
典型應用
PIC16C56-LPE/P 適用於 6 應用s: Consumer Appliance Controllers, Industrial Timers and Counters, Automotive Body Electronics (Legacy), Sensor Interface Front-Ends, LED Display Drivers and Chasers, Legacy Embedded Replacement (Service Stock).
Consumer Appliance Controllers
The PIC16C56-LPE/P fits simple consumer appliance controllers - washing-machine sub-modules, microwave oven keypads, and rice cooker timing boards - because its 12 digital I/O pins directly drive LED segments, key-scan matrices, relay coils, and triac gates without external glue logic. The OTP program memory stores fixed firmware such as cycle state machines and debounce tables that never require field update, satisfying cost-sensitive appliance BOM targets. The extended -40C to +125C temperature grade handles under-cabinet heat soak and proximity to heating elements.
推薦
Industrial Timers and Counters
In industrial timer and counter modules the PIC16C56-LPE/P provides deterministic single-cycle instruction execution that makes relay timing, conveyor pacing, and event-counting loops straightforward to verify. The 33-instruction RISC core and 12-bit instruction word compress typical state-machine code by approximately 2:1 versus legacy 8-bit MCUs, fitting the 1K x 12 program budget. The extended temperature grade supports factory-floor enclosures and unheated warehouses.
推薦
Automotive Body Electronics (Legacy)
The PIC16C56-LPE/P has historically been used in automotive body-electronics sub-modules such as seat controllers, mirror actuators, and interior lighting timers where its extended -40C to +125C grade survives under-dash thermal stress. Its 12 I/O directly switch small solenoids and lamps through MOSFET drivers. Note: the part is obsolete and not AEC-Q100 documented; new automotive designs should use qualified successors such as PIC16F15313-I/SL.
推薦
Sensor Interface Front-Ends
The PIC16C56-LPE/P works well as a sensor interface front-end for simple digital sensors - reed switches, Hall-effect sensors, thermistor bridges with comparator output, and quadrature encoders. Twelve I/O bits accommodate multiple switch inputs plus an indicator LED, while the deterministic instruction cycle gives consistent debounce timing. The LP oscillator domain suits battery-powered remote sensor nodes drawing microamp-level quiescent current.
推薦
LED Display Drivers and Chasers
The PIC16C56-LPE/P drives LED chaser effects, marquee lighting, and small dot-matrix displays by multiplexing up to 12 segments directly with software PWM or Charlieplexing. The 12-bit instruction word and 33-instruction RISC core let the timing loops run without timer overflow. Extended-temperature operation supports outdoor signage enclosures and architectural lighting controllers installed in unconditioned spaces.
推薦
Legacy Embedded Replacement (Service Stock)
Field-service replacement boards for legacy equipment still in operation use the PIC16C56-LPE/P to maintain identical firmware behavior and avoid requalification of the end product. Its OTP memory is a benefit here: the exact firmware image from the original production build can be re-ordered onto replacement parts with no risk of accidental field reprogramming. Same-footprint siblings in the PIC16C5X family may be substituted when the original is out of stock.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16C56-LPE/P — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC16C56-LPI/P | PIC16C56-LP/P | PIC16C56-HSI/P | PIC16C56A-04E/P | PIC16F54-I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-pin PDIP | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same |
| Program Memory | 1.5 KB OTP (1K x 12) | 1.5 KB OTP (1K x 12) | 1.5 KB OTP (1K x 12) | 1.5 KB OTP (1K x 12) | 1.5 KB OTP (1K x 12, A revision) | 0.75 KB Flash (512 x 12) |
| Operating Temperature | -40C to +125C (Extended "E") | -40C to +85C (Industrial "I") | 0C to +70C (Commercial) | -40C to +85C (Industrial "I") | -40C to +125C (Extended "E") | -40C to +85C (Industrial "I") |
| Oscillator Domain | LP (Low-Power) | LP (Low-Power) | LP (Low-Power) | HS (High-Speed) | XT/RC up to 4 MHz | INTOSC + External up to 20 MHz |
| Number of I/O | 12 | 12 | 12 | 12 | 12 | 12 |
| Memory Type | OTP (EPROM) | OTP (EPROM) | OTP (EPROM) | OTP (EPROM) | OTP (EPROM) | Flash (in-circuit reprogrammable) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Active |
主要差異化特點
- Extended temperature silicon grade (對比PIC16C56-LPI/P)
- Low-power oscillator domain (對比PIC16C56-HSI/P)
- OTP/EPROM-based fixed firmware (對比PIC16F54-I/P)
設計說明
PIC16C56-LPE/P uses OTP memory, so firmware must be fully verified on a windowed or emulator part before production programming. Once programmed the firmware cannot be erased or modified, which rules out iterative development cycles in production. For prototypes, use PIC16C56/JW (windowed ceramic) or the flash-based PIC16F54-I/P which is pin-compatible on the 18-pin PDIP footprint.
Place the decoupling capacitor (100 nF ceramic) within 5 mm of the VDD pin (pin 17) and the VSS pin (pin 18). Keep the OSC1/OSC2 traces short and away from high-current switching nodes. When using an external crystal, add a 1 MOhm parallel resistor across the crystal to bias the internal oscillator into its linear region - this is especially important for LP-domain designs below 1 MHz.
Configuration bits (the EPROM configuration word) must be set explicitly; an unprogrammed configuration word can disable the watchdog, select an unintended oscillator mode, or disable code protection. Read the PIC16C5X family datasheet configuration-word table carefully when porting code from PIC16C55 or PIC16C57, as the bit positions differ.
合規資訊
PIC16C56-LPE/P predates RoHS; lead (Pb) is present in the PDIP terminations. Not AEC-Q100 qualified; for new automotive designs use PIC16F15313-I/SL or equivalent qualified flash MCU. REACH status not verified for obsolete part.
