W79E201 Datasheet, PDF (6/87 Pages) Winbond – 8-BIT MICROCONTROLLER

5. BLOCK DIAGRAM
W79E201
P1.0
P1.7
P3.0
P3.7
P4.0
Port 1
Port
Latch
1
ADC
ACC
B
T1 Register T2 Register
Port 0
Latch
P0.0
Port
0
P0.7
Interrupt
Timer
2
Timer
0
Timer
1
1 UART
Port
3
Port
4
Port 3
Latch
Port 4
Latch
Oscillator
PSW
Instruction
Decoder
&
Sequencer
Bus & lock
Controller
ALU
Stack
Pointer
SFR RAM Address
256 bytes
RAM & SFR
DPTR
Temp Reg.
PC
Incrementor
Addr. Reg.
Flash
EPROM
Address
Bus
P2.0
Port 2
Port
Latch
2
P2.7
Reset Block
Power control
&
Power monitor
Watchdog Timer
XTAL1 XTAL2 ALE _PSEN RST
V^CC GND
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