AT89C51RC2-3CSCM View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'AT89C51RC2-3CSCM' PDF : 125 Pages View PDF
Block Diagram
Figure 1. Block Diagram
AT89C51RB2/RC2
XTAL1
XTAL2
ALE/PROG
PSEN
EA
RD (2)
WR (2)
(2) (2)
(1) (1) (1) (1)
EUART
+
BRG
RAM
256x8
Flash
32Kx8 or
16Kx8
XRAM
1Kx8
Boot
ROM
2Kx8
CPU
C51
CORE
IB-bus
PCA Timer2
Timer 0 INT
Timer 1 Ctrl
Parallel I/O Ports & Ext. Bus
Port 0Port 1 Port 2 Port 3
Watch Key
Dog Board
SPI
(2) (2) (2) (2)
(1) (1) (1) (1)
Notes: 1. Alternate function of Port 1.
2. Alternate function of Port 3.
3
4180E–8051–10/06
Share Link: 
