DS89C420-ENL MAXIM [Maxim Integrated Products], DS89C420-ENL Datasheet - Page 3

• Manufacturer Part Number: DS89C420-ENL
• Description: Ultra-High-Speed Microcontroller
• Manufacturer: MAXIM [Maxim Integrated Products]

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 58
Interrupt
CPU
1Kx 8
RAM
Memory
Control
DPTR1
16K x 8
SFRs
DPTR
Loader
Flash
SP
ROM
P0 P1 P2 P3
AR Inc
I/O Ports
Address Bus
PC
AR
DS89C420