TS87C51RD2 ATMEL Corporation, TS87C51RD2 Datasheet - Page 3

• Manufacturer Part Number: TS87C51RD2
• Description: (TS8xC51Rx2) High Performance 8-bit Microcontroller
• Manufacturer: ATMEL Corporation

3. Block Diagram
4188E–8051–08/06
ALE/
EA/VPP
XTAL1
XTAL2
PSEN
PROG
WR
RD
(3)
(3)
CPU
(3) (3)
(3)
Timer 0
Timer 1
EUART
(3)
CORE
C51
(3) (3)
256x8
RAM
Ctrl
INT
(2): Only available on high pin count packages
(3): Alternate function of Port 3
(1): Alternate function of Port 1
IB-bus
0/16/32/64Kx8
Port 0Port 1 Port 2 Port 3
/EPROM
ROM
Parallel I/O Ports & Ext. Bus
256/768x8
XRAM
(1)
Port 4
PCA
(2)
(1)
Port 5
(1)
(2)
Timer2
(1)
Watch
Dog
AT/TS8xC51Rx2
3