Mitsubishi Microcomputers
11
SINGLE-CHIP 32-BIT CMOS MICROCOMPUTER
2001-5-14 Rev.1.0
32170 Group, 32174 Group
Table 6 Description of Pin Function (2/5)
Type
Pin type
CS0,
Description
Input/Output Function
Bus
Chip
Output
Chip select signals for external devices.
control
CS1
select
RD
Read
Output
This signal is output when reading external devices.
BHW/ BHE
Byte high
Output
Indicates the byte positions to which valid are transferred when writing to
external devices.BHW/ BHE and BLW/ BLE correspond to the upper address
write
___
_______
Byte low
Output
side(D0-D7 effective) and the lower address side(D8-D15 effective),respectivel.
write
WAIT
Wait
Input
If WAIT input is low when the M32R accesses external devices, the wait cycle
extended.
_____
Hold
Input
This pin is used by an external device to request control of the external bus.
The M32R goes to a hold state when HREQ input is pulled low.
request
HACK
Hold
Output
This signal indicates to the external device that the M32R has entered a hold
acknowledge
state and relinquished control of the external bus.
Multijunction
TIN0
Timer input
Input
Input pins
for multijunction
timer.
timer
-TIN33
TO0
Timer output
Output
Output pins
for multijunction
timer.
-TO44
TCLK0
Timer clock
Input
Clock i
nput pins
for multijunction
timer.
-TCLK3
A-D
AVCC0,
Analog power –
AVCC0 is the power supply for the A-D0 converters. AVCC1 is the power
converter
AVCC1
upply
supply for the A-D1 converters.
Connect AVCC0 and AVCC1 to the power supply (5V or 3.3V).
AVSS0,
Analog ground –
AVSS0 is the analog ground for the A-D0 converters. AVSS1 is the
AVSS1
analog ground for the A-D1 converters.
Connect AVCC0 and AVCC1 to ground.
AD0IN0
Analog input
Input
One block of 16-channel analog input pin for A-D0 converter.
-AD0IN15
AD1IN0
Two blocks of 16-channel analog input pin for A-D1 converter.
-AD1IN15
VREF0,
Reference
Input
VREF0 is the reference voltage input pin (5V or 3.3V) for the A-D0 converters.
VREF1
_____
ADTRG
voltage input
VREF1 is the reference voltage input pin (5V or 3.3V) for the A-D1 converters.
Conversion
Input
Hardware trigger input pin to start A-D conversion.
trigger
Interrupt
___
SBI
System
Input
System break interrupt(SBI) input pin of the interrupt controller.
controller
break
interrupt