This guide from Guangzhou Zhouligong MCU Development Co., Ltd. (ZLG) describes the P89LPC932, a single-chip microcontroller suited to applications that need high integration and low cost. According to the introduction, it uses a high-performance processor architecture with instruction execution times of only 2 to 4 clock cycles, six times that of standard 80C51 devices, and it integrates system-level functions that reduce component count, board area and system cost.
The document shows the 28-pin TSSOP and 28-pin PLCC pin configurations and the logic symbol, then describes the pins of ports P0 through P3 with their alternate functions, including keyboard interrupts, comparator inputs, UART, I2C, SPI, capture/compare channels and the clock output. A large reference section lists the special function registers with their names, addresses, bit functions and reset values. This manual is written in Chinese.
| Package (TSSOP) | 28-pin TSSOP |
|---|---|
| Package (PLCC) | 28-pin PLCC |
| Instruction execution time | 2 to 4 clock cycles |
| Performance versus 80C51 | 6 times standard 80C51 devices |
| Port 0 width | 8-bit user-configurable I/O port |
| Port 3 width | 2-bit user-configurable I/O port |
The document shows a 28-pin TSSOP package and a 28-pin PLCC package, and notes that the P2 port does not exist in the 20-pin package.
Instruction execution takes only 2 to 4 clock cycles, which the guide states is six times that of standard 80C51 devices.
Port 0 has the keyboard input interrupt function; each pin can also serve as a comparator input or keyboard input KBI0 to KBI7.
P1.2 and P1.3 are open-drain when configured as outputs, and P1.5 is input only.