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MB91307 Series
7
(Continued)
Pin no.
Pin name
I/O
circuit type
Description
38
SDA
Q
I
2
C bus input/output port. This function is valid when I
2
C operation is en-
abled. When the I
2
C bus is in use, the port output must be set to Hi-Z
level. When the I
2
C bus is in use, this is an open drain pin.
General purpose input/output port.
I
2
C bus input/output port. This function is valid when I
2
C operation is en-
abled. When the I
2
C bus is in use, the port output must be set to Hi-Z
level. When the I
2
C bus is in use, this is an open drain pin.
General purpose input/output port.
DMA external transfer request input. When selected as a DMA startup
source, this input is in use at all times, so that output from other functions
must be stopped unless used intentionally.
General purpose input/output port.
DMA external transfer request acknowledge output. This function is valid
when the DMA transfer request acknowledge output setting is enabled.
General purpose input/output port. This function is valid when the DMA
transfer request acknowledge output setting is enabled.
DMA external transfer end output. This function is valid when the DMA
external transfer end output setting is enabled.
DMA external transfer stop input. This function is valid when the DMA ex-
ternal transfer stop input setting is enabled.
General purpose input/output port. This function is valid when the DMA
external transfer end output selection and the DMA external transfer stop
input selection are disabled.
Mode pins 2 to 0. The setting of these two pins determines the basic
operating mode. They should be connected to V
cc
or V
ss
.
DMA external transfer request input. When selected as a DMA startup
source, this input is in use at all times, so that output from other functions
must be stopped unless used intentionally.
General purpose input/output port.
DMA external transfer request acknowledge output. This function is valid
when the DMA transfer request acknowledge output setting is enabled.
General purpose input/output port. This function is enabled when the
DMA transfer request acknowledge output setting is disabled.
DMA external transfer end output. This function is valid when the DMA
external transfer end output setting is enabled.
DMA external transfer stop input. This function is valid when the DMA ex-
ternal transfer stop input setting is enabled.
General purpose input/output port. This function is valid when the DMA
external transfer end output selection and the DMA external transfer stop
input selection are disabled.
PH6
39
SCL
Q
PH7
40
DREQ2
F
PG0
41
DACK2
F
PG1
42
DEOP2
F
DSTP2
PG2
43 to 45
MD2 to MD0
G
46
DREQ0
F
PB0
47
DACK0
F
PB1
48
DEOP0
F
DSTP0
PB2