The P89LPC920/921/922 is described in this ZLG document as a single-chip microcontroller built around a high-speed 80C51 CPU. The text lists features such as 2.4–3.6 V operation, two 16-bit timer/counters, an enhanced UART, two analog comparators, and 20-pin DIP or TSSOP packaging.
The document also includes ordering information for P89LPC920, P89LPC921 and P89LPC922 variants, a pin configuration, a functional block diagram, pin function descriptions, and a table of special function registers. This manual is written in Chinese.
| Operating voltage | 2.4–3.6 V |
|---|---|
| CPU | High-speed 80C51 CPU, 6× standard 80C51 |
| Timer/counters | 2 × 16-bit timer/counters |
| Analog comparators | 2 |
| UART | Enhanced UART |
| Package | 20-pin TSSOP and 20-pin DIP |
| Operating frequency | 0–12 MHz |
The operating voltage is 2.4–3.6 V.
The devices are offered in 20-pin TSSOP and 20-pin DIP packages.
It has two 16-bit timer/counters.
The listed operating frequency is up to 12 MHz.