IDT79RC4640

IDT79RC4640™

Pin

Name

ColdReset*

Type

Input

Reset*

ModeClock

ModeIn

Int*(5:0)

NMI*

Input

Output

Input

Input

Input

Description

Cold reset

This signal must be asserted for a power on reset or a cold reset. ColdReset must be de-asserted synchronously with MasterClock.

Reset

This signal must be asserted for any reset sequence. It may be asserted synchronously or asynchronously for a cold reset, or synchronously to initiate a warm reset. Reset must be de-asserted synchronously with MasterClock.

Boot mode clock

Serial boot-mode data clock output at the system clock frequency divided by 256.

Boot mode data in

Serial boot-mode data input.

Interrupt

Six general processor interrupts, bit-wise OR’ d with bits 5:0 of the interrupt register.

Non-maskable interrupt

Non-maskable interrupt, OR’d with bit 6 of the interrupt register.

Absolute Maximum Ratings

Note: Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a

stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

Symbol Rating

R4640

5.0V±5%

RV4640

3.3V±5%

Commercial Commercial

V

TERM

T

C

T

BIAS

Terminal Voltage with respect to GND

Operating Temperature(case)

Case Temperature Under Bias

–0.5

1 to +7.0

0 to +85

–55 to +125

–0.5

1

to +4.6

0 to +85

–55 to +125

T

STG

Storage Temperature –55 to +125 –55 to +125

I

IN

DC Input Current 20

2

20

2

I

OUT

DC Output Current 50

3

50

3

1.

NVIN minimum = –2.0V for pulse width less than 15ns. VIN should not exceed VCC +0.5 Volts.

2.

When VIN < 0V or VIN > VCC

3.

Not more than one output should be shorted at a time. Duration of the short should not exceed 30 seconds.

RV4640

3.3V±5%

Industrial

–0.5

1

to +4.6

-40 to +85

–55 to +125

–55 to +125

20

2

50

3

Unit

V

°C

°C

°C mA mA

Recommended Operation Temperature and Supply Voltage

Grade

Commercial

Industrial

Temperature

0

°C to +85°C (Case)

-40

°C + 85°C (Case)

0V

0V

GND

R4640

V

CC

5.0V

±5%

N/A

RV4640

V

CC

3.3V

±5%

3.3V

±5%

12 of 23 December 5, 2008