MDT2020FF Datasheet, PDF (15/16 Pages) Micon Design Technology Corporation – 8-bit micro-controller

12. Block Diagram
MDT2020(FF)
Stack Two Levels
11 bits
11 bits
EPROM
2048×14
14 bits
Program Counters
Instruction
Register
OSC1 OSC2
MCLR
Oscillator Circuit
Instruction
Decoder
RAM
72*8
Port A
Port
PA0~PA3
4 bits
Special Register
D0~D7
Control Circuit
Port B
Port
PB0~PB7
8 bits
Power on Reset
Power Down Reset
Working Register
ALU
Data 8-bit
Status Register
Port C
Port
PC0~PC7
8 bits
8-bit Timer/Counter
Prescale
RTCC
WDT/OST
Timer
This specification are subject to be changed without notice. Any latest information please preview
http;//www.mdtic.com.tw
P. 14
2007/8 VER 1.5