W77IE58 Datasheet, PDF (6/90 Pages) Winbond – 8-BIT MICROCONTROLLER

BLOCK DIAGRAM
Preliminary W77IE58
P1.0
P1.7
P3.0
P3.7
P4.0
P4.3
Port
Port 1
1
Latch
ACC
B
T1 Register T2 Register
Port 0
Latch
P0.0
Port
0
P0.7
Interrupt
Timer
2
Timer
0
Timer
1
2 UARTs
Port
Port 3
3
Latch
Port 4
Latch
Port
4
Oscillator
PSW
Instruction
Decoder
&
Sequencer
Bus & lock
Controller
ALU
Stack
Pointer
SFR RAM Address
256 bytes
RAM & SFR
1KB SRAM
DPTR
DPTR 1
Temp Reg.
PC
Incrementor
Addr. Reg.
Address
Bus
32KB ROM
Port 2
Port
Latch
2
P2.0
P2.7
Reset Block
Power control
&
Power monitor
Watchdog Timer
XTAL1 XTAL2 ALE PSEN
RST
VCC GND
-6-