ZEN8105

Preliminary ZEN8105 Enhanced 8051 Microcontroller with 10-bit ADC Features 8051 compatible Pipe-lined instruction based on the single-chip 8-bit micro-controller Flash ROM: 16K Bytes RAM: internal 256 Bytes and external 512 Bytes Operation voltage: fOSC=400k - 12MHz, VDD=4.0V – 5.5V Oscillator (Code option): - Ceramic resonator: 400K - 12MHz - Internal RC oscillator: 12MHz 29 CMOS general purpose I/O ports 4 open-drain type I/O available Built-in pull-high resistor for I/O Three 16-bit timer / counters: T0, T1 & T2 Powerful interrupt sources: - Timer0, Timer1, Timer2 - External interrupt 0~3 - External interrupt 4: 8 inputs - ADC, EUART, Enhanced UART 10-bit 8 channel Analog Digital Converter (ADC) with built-in compare function Built-in low voltage reset function (enabled by code option) - LVR voltage level: 3.1V CPU Machine cycle: - 1 oscillator clock Built-in Watch Dog Timer (WDT) Warm-up timer for power-on reset Support Low power operation modes: - IDLE Mode - Power-Down Mode Flash type Package: - 20-pin plastic DIP Package General Description The ZEN8105 is a fast 8051 compatible micro-controller with a redesigned CPU of no wasted clock and memory cycles. Typically, it will be faster than and exhibit better performance than the traditional 8051 at the same oscillator frequency. The ZEN8105 retains most features of the standard 8051. These features include internal 256 bytes RAM and two 16-bit timer/counters. In addition, the ZEN8105 provides external 512 bytes RAM an...