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E86TM family 80C186- and 80C188-compatible microcontroller with enhanced bus interface
- Lower system cost with higher performance
- 3.3-V 0.3-V operation (Am186EDLV microcontrollers)
Programmable DRAM Controller
- Supports zero-wait-state operation with 50-ns DRAM at 40 MHz, 60-ns at 33 MHz, 70-ns at
25MHz
- Includes programmable CAS-before-RAS refresh capability
High performance
- 20-, 25-, 33-, and 40-MHz operating frequencies
- Zero-wait-state operation at 40 MHz with 70-ns static memory
- 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
- 8-bit or 16-bit programmable bus sizing including 8-bit boot option
Enhanced integrated peripherals
- 32 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
- Improved serial port operation enhances 9-bit DMA support
- 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
- Reset configuration register
Familiar 80C186, 80C188 peripherals
- Two independent DMA channels
- Programmable interrupt controller with up to 8 external and 8 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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