P89LPC932A1 is a single-chip microcontroller designed for applications demanding high-integration, low cost solutions over a wide range of performance requirements.
The manual provides an overview of the P89LPC932A1 microcontroller, its architecture, and the enhancements over the earlier P89LPC932 device. It describes the two‑clock 80C51 core, on‑chip 8‑bit A/D converter, and the various system‑level functions that reduce component count and board space.
Detailed sections cover pin configurations, programming methods (ICP and IAP), clock selection, watchdog timer support, memory organization, and peripheral modules such as UART, SPI, I2C, and comparators. The document also includes information on flash programming, security keys, and errata fixes.
| Core architecture | Two‑clock 80C51 core, 8‑bit |
|---|---|
| Instruction execution speed | 2‑4 clocks per instruction, ~6× faster than standard 80C51 |
| Port 0 | 8‑bit I/O port, Schmitt‑triggered inputs |
| Port 1 | 8‑bit I/O port, mixed open‑drain and input‑only pins |
| Watchdog timer | Supported with configurable prescaler |
| In‑circuit programming (ICP) | Uses five pins: Vpp, Vss, P0.5, P0.4, RST |
In‑circuit programming uses five pins: Vpp, Vss, P0.5, P0.4, and RST.
Port 0 provides eight independent I/O pins (P0.0‑P0.7).
Yes, the device supports a watchdog timer with configurable prescaler values.