King Billion Electronics Co., Ltd

駿

億

電

子

股

份

有

限

公

司

HF88M08

January 16, 2004

Page 17 of 19

V1.11

This specification is subject to change without notice. Please contact sales person for the latest version before use.

monotonically with increasing voltage, and it is shorter than Chip Enable Access Time when the

use the Address Access Mode to achieve faster access to ROM data when the power consumption is not a

concern.

Item

Symbol 2.4V 3.0V 3.3V 3.6V 4.5V 5.0V 5.5V

Unit

Remark

Chip Enable Access Time

-

240

210

190

180

210

250

ns

Min

Address Access Time

480

230

200

180

150

140

130

ns

Min

10 DC Electrical Characteristics

Parameter

Symbol

Min.

Typical

Max.

Unit

Condition

Supply Voltage

2.4

-

5.5

V

Operating Current

-

10

-

mA

No load

Standby Current

-

10

-

µA

No load

Input voltage

2/3

0

-

-

1

1/3

Input current leakage

-

-

+/- 10

µA

P0, P1 Output High

Voltage

2.4

-

-

V

P0, P1 Output Low

Voltage

-

-

0.4

V

D Output High Voltage

2.4

-

-

V

D Output Low Voltage

-

-

0.4

V

11 Application Circuit Diagram

This application circuit illustrates that how KB83760 MCU uses two external HF88M08s for ROM

expansion as well as keyboard scan functions.