HD64F7047 datasheet(47/764 Pages) RENESAS

47 / 764 page

Rev. 2.00, 09/04, page 7 of 720

Type

Symbol

I/O

Name

Function

MD3

MD2

MD1

MD0

Input

Set the mode

Set the operating mode. Inputs at these

pins should not be changed during

operation.

Operating

mode control

FWP

Input

Protection

against write

operation into

Flash memory

Pin for the flash memory. This pin is only

used in the flash memory version. Writing

or erasing of flash memory can be

protected. This pin becomes the Vcc pin

for the mask ROM version.

RES

Input

Power on

reset

When this pin is driven low, the chip

becomes to power on reset state.

MRES

Input

Manual reset

When this pin is driven low, the chip

becomes to manual reset state.

HSTBY

Input

Standby

When this pin is driven low, a transition is

made to hardware standby mode.

WDTOVF

Output

Watchdog

timer overflow

Output signal for the watchdog timer

overflow. If this pin need to be pulled-

down, use the resistor larger than 1 M

Ω to

pull the pin down.

BREQ

Input

Bus request

External device can request the release of

the bus mastership by setting this pin low.

System

control

BACK

Output

Bus

acknowledge

Shows that the bus mastership has been

released for the external device. The

device that had issued the

BREQ signal

can know that bus mastership has been

released for itself by receiving the

BACK

signal.

NMI

Input

Non-maskable

interrupt

Non-maskable interrupt pin. If this pin is

not used, it should be fixed high, or fixed

low.

IRQ3

IRQ2

IRQ1

IRQ0

Input

Interrupt

request 3 to 0

These pins request a maskable interrupt.

One of the level input or edge input can

be selected. In case of the edge input,

one of the rising edge, falling edge, or

both can be selected.

Interrupts

IRQOUT

Output

Interrupt

request output

Shows that an interrupt cause has

occurred. The interrupt cause can be

recognized even in the bus release state.

Address bus A17 to A0

Output

Address bus

Output the address.

Data bus

D7 to D0

Input/

Output

Data bus

Bi-directional 8-bits bus.

HD64F7047 Datasheet(PDF) 47 Page - Renesas Technology Corp

HD64F7047 Datasheet(HTML) 47 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