TS87C51RD2-MIE データシートの表示（PDF） - Atmel Corporation
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TS87C51RD2-MIE Datasheet PDF : 86 Pages
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3. Block Diagram
AT/TS8xC51Rx2
XTAL1
XTAL2
ALE/PROG
PSEN
EA/VPP
RD (3)
WR (3)
(3) (3)
(1) (1) (1) (1)
EUART
RAM
256x8
ROM
/EPROM
XRAM
0/16/32/64Kx8 256/768x8
PCA
Timer2
CPU
C51
CORE
IB-bus
Timer 0 INT
Timer 1 Ctrl
(3) (3) (3) (3)
Parallel I/O Ports & Ext. Bus
Port
0
Port
1
Port
2
Port
3
Port
(2)
4
Port
(2)
5
Watch
Dog
(1): Alternate function of Port 1
(2): Only available on high pin count packages
(3): Alternate function of Port 3
3
4188F–8051–01/08
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