at89c51ic2-slsim ATMEL Corporation, at89c51ic2-slsim Datasheet - Page 3

• Manufacturer Part Number: at89c51ic2-slsim
• Description: At89c51ic2 8-bit Flash Microcontroller With 2-wire Interface
• Manufacturer: ATMEL Corporation

Block Diagram
Figure 1. Block Diagram
4301D–8051–02/08
ALE/PROG
XTAL1
XTAL2
PSEN
WR
EA
RD
(2)
(2)
CPU
(1): Alternate function of Port 1
(2): Alternate function of Port 3
(2) (2)
(2)
Timer 0
Timer 1
EUART
BRG
(2)
+
CORE
C51
(2) (2)
RAM
Ctrl
256
INT
x8
IB-bus
Port 0 Port 1
Parallel I/O Ports & Ext Bus
32K x 8
Flash
Port 2
Port 3 Port 12
(1)
(1)
PCA
(1)
Watch
Timer 2
Dog
(1)
Board
Key
Two-Wire
(1)
SPI
(1)
(1)
(1)
3