M32171F3 Ver la hoja de datos (PDF) - MITSUBISHI ELECTRIC
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M32171F3 Datasheet PDF : 37 Pages
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2001-5-14 Rev.1.0
Mitsubishi Microcomputers
32171 Group
SINGLE-CHIP 32-BIT CMOS MICROCOMPUTER
Table 5 Description of Pin Function (2/4)
Type
Bus
control
Pin type
___
CS0,
CS1
__
RD
___ _______
BHW/ BHE
___ _______
BLW/ BLE
____
WAIT
_____
HREQ
____
HACK
Description Input/Output Function
Chip
select
Output
Chip select signals for external devices.
Read
Output
This signal is output when reading external devices.
Byte high
write
Byte low
write
Wait
Output
Output
Input
Indicates the byte positions to which valid are transferred when writing to
________ _______
________ _______
external devices.BHW/ BHE and BLW/ BLE correspond to the upper address
side(D0-D7 effective) and the lower address side(D8-D15 effective),respectivel.
_________
If WAIT input is low when the M32R accesses external devices, the wait cycle
extended.
Hold
request
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.
Hold
Output
acknowledge
This signal indicates to the external device that the M32R has entered a hold
state and relinquished control of the external bus.
Multijunction TIN0, TIN3
timer
TIN16-TIN23
TO0
-TO20
Timer input Input
Timer output Output
Input pins for multijunction timer.
Output pins for multijunction timer.
TCLK0
-TCLK3
Timer clock Input
Clock input pins for multijunction timer.
A-D
AVCC0,
converter
AVSS0
Analog power –
upply
Analog ground –
AVCC0 is the power supply for the A-D0 converters.Connect AVCC0
to the power supply (5V or 3.3V).
AVSS0 is the analog ground for the A-D0 converters. Connect AVCC0 to ground
AD0IN0
-AD0IN15
Analog input Input
16-channel analog input pin for A-D0 converter.
VREF0
___
Interrupt SBI
controller
Reference Input
voltage input
System
break
interrupt
Input
VREF0 is the reference voltage input pin (5V or 3.3V) for the A-D0 converters.
System break interrupt(SBI) input pin of the interrupt controller.
9
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