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E86 family 80C186- and 80C188-compatible microcontrollers with enhanced bus interface
- Lower system cost with higher performance
- 5.0 V operation (Am186EM and Am188EM microcontrollers)
- 3.3-V operation (Am186EMLV and Am188EMLV microcontrollers)
High performance
- 20-, 25-, 33-, and 40-MHz operating frequencies
- Supports zero-wait-state operation at 25 MHz with 100-ns static memory
(Am186EMLV and Am188EMLV microcontrollers)
- Supports zero-wait-state operation at 40MHz with 70-ns static memory
(Am186EM and Am188EM microcontrollers)
- 1-Mbyte memory address space
- 64-Kbyte I/O space
Enhanced features provide improved memory access and remove the requirement for a 2x clock input
- Nonmultiplexed address bus
- Processor operates at the clock input frequency
- On the Am186ES/ESLV microcontroller, 8-bit or 16-bit memory and I/O static bus option
New integrated peripherals provide increased functionality while reducing system cost
- Thirty-two programmable I/O (PIO) pins
- Two full-featured asynchronous serial ports allow full-duplex, 7-bit, 8-bit, or 9-bit data transfers
- Serial port hardware handshaking with CTS, RTS, ENRX, and RTR selectable for each port
- Multidrop 9-bit serial port protocol
- Independent serial port baud rate generators
- DMA to and from the serial ports
- Watchdog timer can generate NMI or reset
- A pulse-width demodulation option
- A data strobe, true asynchronous bus interface option included for DEN
- Pseudo static RAM (PSRAM) controller includes auto refresh capability
- Reset configuration register
Familiar 80C186/80L186 peripherals
- Two independent DMA channels
- Programmable interrupt controller with up to eight external and eight internal interrupts
- Three programmable 16-bit timers
- Programmable memory and peripheral chip-select logic
- Programmable wait state generator
- Power-save clock divider
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