EM78815
8-Bit Microcontroller
7.2.12.4 Page 3 DA Control
Bit 7
DA9
Bit 6
DA8
Bit 5
DA7
Bit 4
DA6
Bit 3
DA5
Bit 2
DA4
Bit 1
DA3
Bit 0
DA2
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
Bit 0 ~ Bit 7 (DA2 ~ DA9) : Current DA most significant 8 bits of Current DA
output buffer
Combine these 8 bits and R9 Page 3 Bit 4~Bit 5, 2 bits as complete 10 bits Current
DA output data. Control register Bit 3 is Current DA power control.
VDD
DA9..DA0
DAOUT
Port D7
Current DA
Circuit
Port D7
MUX
DAS
DAEN
Fig 11 s Current DA structure
7.2.13 R7 Port 7 I/O Data, Data ROM Address, CNT2 Data, SPI
Control
7.2.13.1 Page 0 Port 7 I/O Data
Bit 7
P77
Bit 6
P76
Bit 5
P75
Bit 4
P74
Bit 3
P73
Bit 2
P72
Bit 1
P71
Bit 0
P70
R/W-X
R/W-X
R/W-X
R/W-X
R/W-X
R/W-X
R/W-X
R/W-X
Bit 0 ~ Bit 7 (P70 ~ P77) : 8-bit Port 7(0~7) I/O data register
User can use the IOC register to define whether each bit is input or output.
7.2.13.2 Page 1 Data ROM Address
Bit 7
DRA7
R/W-X
Bit 6
DRA6
R/W-X
Bit 5
DRA5
R/W-X
Bit 4
DRA4
R/W-X
Bit 3
DRA3
R/W-X
Bit 2
DRA2
R/W-X
Bit 1
DRA1
R/W-X
Bit 0
DRA0
R/W-X
Bit 0 ~ Bit 7 (DRA0 ~ DRA7) : Data ROM address ( 0~7 ) for ROM reading
Product Specification (V2.4) 08.01.2004
(This specification is subject to change without further notice)
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ELAN [ ELAN MICROELECTRONICS CORP ]
