This is the Chinese version of the DS41236B_EN datasheet published by Microchip Technology Inc., which introduces the features and characteristics of the PIC12F508/509/16F505 series of 8/14-pin 8-bit flash microcontrollers.
This datasheet describes the low‑cost, high‑performance 8‑bit flash‑based CMOS microcontrollers PIC12F508, PIC12F509 and PIC16F505. It covers architecture, instruction set, memory organization, I/O ports, timer modules, electrical characteristics and package options.
Key features include a 4 MHz internal oscillator (with selectable external options), programmable watchdog timer, code‑protect, low power modes, and a 33‑instruction RISC core. The document also lists development tools, ordering information and global support contacts. This manual is written in Chinese.
| Program memory (PIC12F508) | 512 bytes |
|---|---|
| Program memory (PIC12F509 / PIC16F505) | 1024 bytes |
| Data memory (SRAM) (PIC12F508) | 25 bytes |
| Data memory (SRAM) (PIC12F509) | 41 bytes |
| Data memory (SRAM) (PIC16F505) | 72 bytes |
| Operating voltage range | 2.0 V to 5.5 V |
| Typical standby current (2 V) | 100 nA |
| Maximum clock input | 20 MHz (PIC16F505) |
| Internal oscillator | 4 MHz high‑precision |
The devices operate from 2.0 V up to 5.5 V.
Each device provides six I/O pins – five configurable and one input‑only pin.
Typical standby current is about 100 nA at 2 V.