Renesas M3A-HS64, Руководство пользователя

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M3A-HS64 Functions
2.6 I/O Ports
Rev. 1.00 Apr 30, 2009
2-23
REJ11J0034-0100
2
2.6 I/O Ports
SH7264 I/O ports are connected to switches and LEDs on the M3A-HS64.
Ports PH7 to PH0 can be used as analog input pins (AN7 to AN0). Remove JP15 to use PH7 to PH4 as an analog input pin.
Port A can be used as a user interface by setting PB22 pin to high output.
The following figure shows the I/O ports block diagram. Table 2.6.1 lists the jumpers setting (JP14, and JP15). Table 2.6.2 shows
Port A function switching.
3.3 V
3.3 V
3.3 V
1.5 K
Ω
3.3 V
1.5 K
Ω
SH7264
AN0
AN1
AN2
AN3
PH0/ AN0
PH3/ AN3
PH2/ AN2
PH1/ AN1
PA0 /MD_BOOT1
PA1 /MD_BOOT0
PA2 /MD_CLK1
PA3 /MD_CLK0
Expansion connector
AVcc
AVcc
AVcc
AVcc
D1
S1A
S1B
D2
S2A
S2B
D3
S3A
S3B
D4
S4A
S4B
MUX
EN# IN
PB22 /A22
BT1
BT0
CK1
CK0
BT1
BT0
CK1
CK0
3.3 V
3.3 V
3.3 V
User DIP switches
（
SW6
）
System setting DIP switches
（
SW5
）
NOR flash memory
3.3 V
3.3 V
JP14
5
6
1
3
2
MUX
Note: Pin names in red indicate the function used.
AN4
AN5
AN6
AN7
PH4/ AN4
PH7/ AN7
PH6/ AN6
PH5/ AN5
AVcc
AVcc
AVcc
AVcc
3.3 V
JP15
Figure 2.6.1 I/O Ports Block Diagram
Table 2.6.1 Jumpers Setting (JP14, JP15)
Number
1-2 None (Open)
JP14
Uses PH [0:3] as an input port (default)
(1)
Uses PH [0:3] as an analog input pin
JP15
Uses PH [4:7] as an input port (default) Uses PH [4:7] as an analog input pin
(2)
Notes: (1) Mount R10 to R13 when using PH [0:3] as an input port.
(2) Remove R14 to R17 when using PH [4:7] as an analog input pin.
Table 2.6.2 Port A Function Switching
Number
High output Low output
PB22
Uses Port A as a user interface Mode sampling (At power-up)