TS80C52X2
Table 1. Memory size
TOTAL RAM
(bytes)
ROM (bytes)
EPROM (bytes)
TS80C32X2
0
0
256
256
256
TS80C52X2
TS87C52X2
8k
0
0
8k
3. Block Diagram
(3) (3)
(1) (1)
XTAL1
XTAL2
ROM
/EPROM
8Kx8
RAM
256x8
EUART
Timer2
ALE/PROG
PSEN
C51
CORE
IB-bus
CPU
EA/VPP
(3)
(3)
Timer 0
Timer 1
INT
Ctrl
Parallel I/O Ports & Ext. Bus
RD
Port 0 Port 1
Port 3
Port 2
WR
(3) (3)
(3) (3)
(1): Alternate function of Port 1
(2): Only available on high pin count packages
(3): Alternate function of Port 3
2
Rev. B - Jan. 25, 1999
Preliminary