32174 datasheet(37/881 Pages) RENESAS

37 / 881 page

1-14

32170/32174 Group User's Manual (Rev. 2.1)

Table 1.3.1 Description of the 32170 Pin Function (2/6)

Type

Pin Name Signal Name

Input/Output Function

Data

DB0-DB15 Data bus

Input/Output These pins comprise 16-bit data bus to connect external

devices. In write bus cycles, the valid byte positions to be

___ ___

written on the 16-bit data bus are output as BHW/BHE and

___ ___

BLW/BLE. In read cycles, data is always read from the 16-

bit data bus. However, when transferring to the internal

circuit of the M32R, only data at the valid byte positions are

transferred.

Bus

___

CS0,

Chip select

Output

These pins comprise external device chip select signal. For

control

___

CS1

areas for which a chip select signal is output, refer to

Chapter 3, "Address Space."

Read

Output

This signal is output when reading an external device.

___ ___

BHW/BHE Byte high

Output

Indicates the byte position to which valid data is transferred

write/enable

___ ___

when writing to an external device. BHW/BHE corresponds

___ ___

BLW/BLE

Byte low

Output

___ ___

to the upper address (D0-D7 is valid); BLW/BLE

write/enable

corresponds to the lower address (D8-D15 is valid).

____

WAIT

Wait

Input

When the M32R accesses an external device, a low on this

____

WAIT input extends the wait cycle.

____

HREQ

Hold request

Input

This pin is used by an external device to request control of

____

the external bus. A low on this HREQ input causes the

M32R to enter a hold state.

____

HACK

Hold

Output

This signal is used to notify that the M32R has entered a

acknowledge

hold state and relinquished control of the external bus.

TIN 0–TIN 33 Timer input

Input

Input pins for multijunction timer.

TO 0– TO 44 Timer output

Output

Output pins for the multijunction timer.

TCLK 0– TCLK 3 Timer clock

Input

Clock input pins for the multijunction timer.

A-D

AVCC0,

Analog power supply

—

AVCC0 is the power supply for the A-D0 converter. AVCC1

converter AVCC1

is the power supply for the A-D1 converter. Connect AVCC0

and 1 to the power supply rail.

AVSS0,

Analog ground

—

AVSS0 is analog ground for the A-D0 converter. AVSS1 is

AVSS1

—

analog ground for the A-D1 converter. Connect AVSS0 and

1 to the ground.

AD0IN0

Analog input

Input

16-channel analog input pins for the A-D0 converter.

–AD0IN15

AD1IN0

16-channel analog input pins for the A-D1 converter.

–AD1IN15

OVERVIEW

1.3 Pin Function

Multi-

junction

timer

32174 Datasheet(PDF) 37 Page - Renesas Technology Corp

32174 Datasheet(HTML) 37 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL