FlashFlex51 MCU
SST89E52RD2/RD / SST89E54RD2/RD / SST89E58RD2/RD
SST89V52RD2/RD / SST89V54RD2/RD / SST89V58RD2/RD
Data Sheet
1.0 FUNCTIONAL BLOCKS
8051
CPU Core
ALU,
ACC,
B-Register,
Instruction Register,
Program Counter,
Timing and Control
Oscillator
Interrupt
Control
10 Interrupts
Watchdog Timer
Flash Control Unit
SuperFlash
EEPROM
Primary
Block
8K/16K/32K x8
Secondary
Block
8K x8
RAM
1K x8
8
I/O Port 0
8
Security
Lock
I/O Port 1
8
I/O Port 2
I/O
8
I/O Port 3
I/O
4
I/O Port 4
I/O
I/O
I/O
Timer 0 (16-bit)
Timer 1 (16-bit)
Timer 2 (16-bit)
SPI
PCA
Enhanced
UART
1255 B1.1
FIGURE
1-1: Functional Block Diagram
©2006 Silicon Storage Technology, Inc.
S71255-05-000
5/06
6
SST [ SILICON STORAGE TECHNOLOGY, INC ]
