DS89C420 Dallas Semiconducotr, DS89C420 Datasheet - Page 3
DS89C420
Manufacturer Part Number
DS89C420
Description
Ultra-High-Speed Microcontroller
Manufacturer
Dallas Semiconducotr
Datasheet
1.DS89C420.pdf
(59 pages)
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Figure 1. Block Diagram
Control &
Sequencer
Watchdog Timer
Power Manager
Decoder
IR
&
Internal Control Bus
Serial I/O
Internal
Registers
Clock &
Timer /
Counters
Reset
3 of 59
Interrupt
CPU
1Kx 8
RAM
Memory
Control
DPTR1
16K x 8
SFRs
DPTR
Loader
Flash
ROM
SP
P0 P1 P2 P3
AR Inc
I/O Ports
Address Bus
PC
AR