The HR7P187 datasheet provides specifications, pin assignments, and functional details for Haier's 8‑bit MCU.
The HR7P187 is an 8‑bit microcontroller featuring a high‑performance Harvard‑type RISC CPU core, up to 16 MHz operating frequency, and a range of on‑chip peripherals. It offers 2 K words of flash program memory, 176 bytes of SRAM, and 256 bytes of EEPROM, with dedicated PA and PC I/O ports and support for up to ten interrupt sources.
The document includes recommended power‑up and reset procedures, pin‑level specifications, ESD/EFT protection guidelines, and detailed descriptions of timers, PWM, comparators, ADC, and watchdog modules. Package options are DIP‑14 and SOP‑14, and the datasheet provides electrical characteristic curves for various supply voltages. This manual is written in Chinese.
| Maximum CPU frequency | 16 MHz |
|---|---|
| Program memory (Flash) | 2 K Words (4 KB) |
| Data memory (SRAM) | 176 Bytes |
| EEPROM memory | 256 Bytes |
| I/O ports | PA0‑PA5, PC0‑PC5 |
| Package options | DIP‑14, SOP‑14 |
The MCU should be powered on first, then the rest of the system components; during power‑down, other components are powered down before the MCU.