I/O Ports - Renesas M3A-HS64 User Manual

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