HD6413258F10V Datasheet, PDF (124/301 Pages) Renesas Technology Corp – Regarding the change of names mentioned in the document, such as Hitachi Electric and Hitachi XX, to Renesas Technology Corp.

6.1.3 Input and Output Pins
Table 6-1 lists the input and output pins used by the parallel handshaking interface.
Table 6-1. Input and Output Pins of Parallel Handshaking Interface
Name
Data input/output pins
Input strobe
Output strobe
Busy
Abbreviation I/O
P37 – P30
I/O
IS
I
OS
O
BUSY
O
Function
Data input and output
Strobe for input data
Strobe for output data
Busy signal
6.1.4 Register Configuration
Table 6-2 lists information about the parallel handshaking interface registers.
Table 6-2. Register Configuration
Name
Abbreviation
Port 3 data direction register
P3DDR
Port 3 data register
P3DR
Handshake control/status register HCSR
R/W
W
R/W
R/W
Initial value
H'00
H'00
H'03
Address
H'FFB4
H'FFB6
H'FFFE
6.2 Register Descriptions
6.2.1 Port 3 Data Direction Register (P3DDR)
Bit
Initial value
Read/Write
7
6
5
4
3
2
1
0
P37DDR P36DDR P35DDR P34DDR P33DDR P32DDR P31DDR P30DDR
0
0
0
0
0
0
0
0
W
W
W
W
W
W
W
W
To use the parallel handshaking interface for input, clear P3DDR to H'00. For output, set P3DDR to
H'FF. Do not set the bits individually.
See Section 5.4, Port 3 for further information.
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