Product Overview
The AM188ER-40KC\W is an AMD AM188 8-bit bus embedded processor at 40MHz. 80C188-compatible core with 8-bit external data bus. Integrated dual UART, timers, DMA, and PIO. PLCC-68 package. Lower pin count than AM186 version for cost-sensitive 8-bit bus designs.
Key Specifications
| Type | AM188 Embedded Processor |
| Core | 80C188 8-bit bus |
| Clock | 40 MHz |
| ROM | None (external) |
| SRAM | Internal |
| Interface | UARTx2, Timerx3, DMA, PIO |
| Address Space | 1 MB |
| Supply Voltage | 5V |
| Operating Temp | -40 to +85C |
| Package | PLCC-68 |
Working Principle
The AM188ER shares the same 80C186 core but multiplexes the 16-bit internal data bus onto an 8-bit external bus, halving the data bus pin count. This reduces package size and system cost for applications not requiring 16-bit bus bandwidth. All internal peripherals function identically to the AM186ER. The 8-bit bus interface automatically performs high/low byte assembly for word accesses. Two clock cycles are required for word transfers vs. one for the AM186.
Applications
- Cost-sensitive embedded
- Serial communication
- Industrial control