at89c51rc2-slsil ATMEL Corporation, at89c51rc2-slsil Datasheet - Page 3

• Manufacturer Part Number: at89c51rc2-slsil
• Description: 8-bit Microcontroller With 16k/ 32k Bytes Flash
• Manufacturer: ATMEL Corporation

Block Diagram
Figure 1. Block Diagram
Notes:
4180E–8051–10/06
1. Alternate function of Port 1.
2. Alternate function of Port 3.
ALE/
XTAL1
XTAL2
PSEN
PROG
WR
RD
EA
(2)
(2)
CPU
(2) (2)
(2)
Timer 0
Timer 1
EUART
BRG
(2)
+
CORE
C51
(2) (2)
256x8
RAM
Ctrl
INT
IB-bus
Parallel I/O Ports & Ext. Bus
32Kx8 or
Port 0Port 1 Port 2 Port 3
16Kx8
Flash
XRAM
1Kx8
2Kx8
Boot
ROM
(1)
Watch
PCA
Dog
(1)
AT89C51RB2/RC2
(1)
Board
Key
Timer2
(1)
(1) (1) (1) (1)
SPI
3