King Billion Electronics Co., Ltd

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HF88M02

January 16, 2004

Page 16 of 19

V1.11

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

7.6 Output to P0 and P1 Ports

CE n

WE n

OE n

P 0_D a ta

D [7:0]

FFh

5 5 h

AA h

ZZ

ZZ

O u tput to P 0 a nd P 1 P o rts

P 0_D IR

P 1_D a ta

P 1_D IR

RS [2 :0 ]

101b

111b

FFh

FF h

FFh

00h

FF h

00h

000b

FF h

100b

110b

55h

AA h

8 Absolute Maximum Rating

Items

Symbol

Rating

Supply Voltage

-0.3 to 6 V

Input Voltage

-0.3 to Vdd+0.3 V

Operating Temperature

-0 to 70

°C

Storage Temperature

-55 to 125

°C

9 AC Electrical Characteristics

READ CYCLE

There are two ways of accessing the ROM data. The first one is to assert the valid address on the

Address Bus, then assert CEn “low” to enable the ROM array. The access time in this mode is specified

access mode keeps the CEn “low” while changes the addresses to access the contents of ROM data. The