King Billion Electronics Co., Ltd

駿

億

電

子

股

份

有

限

公

司

HE84770D

HE80000 SERIES

August 7, 2006

Page 18 of 29

V1.2

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

SCNO5

0x85

0xA5 0xC5 0xE5

SCNO6

0x86

0xA6 0xC6 0xE6

SCNO7

0x87

0xA7 0xC7 0xE7

SCNO8

0x88

0xA8 0xC8 0xE8

SCNO9

0x89

0xA9 0xC9 0xE9

SCNO10 0x8A 0xAA 0xCA 0xEA

SCNO11 0x8B 0xAB 0xCB 0xEB

SCNO12 0x8C 0xAC 0xCC 0xEC

SCNO13 0x8D 0xAD 0xCD 0xED

SCNO14 0x8E 0xAE 0xCE 0xEE

SCNO15 0x8F 0xAF 0xCF 0xEF

SCNO16 0x90

0xB0 0xD0 0xF0

SCNO17 0x91

0xB1 0xD1 0xF1

SCNO18 0x92

0xB2 0xD2 0xF2

SCNO19 0x93

0xB3 0xD3 0xF3

KEY0

BIT7

BIT6

BIT5

BIT4

BIT3

BIT2

BIT1

BIT0

0x22

R

Row Index

Column Index

KEY1

BIT7

BIT6

BIT5

BIT4

BIT3

BIT2

BIT1

BIT0

0x23

R

Row Index

Column Index

The bit 7 of KEY0 and KEY1 is repeat indicator when the same key is scanned for the second time, the R

bit will be cleared to indicate the key is not released yet.

The key-scan function can be turned on/off by mask option MO_LCDKEY.

MO_LCDKEY

SGKY[43..24] Function

0

as SEG only

1

as SEG as well as KEY_SCAN

The pulse width of key-scan signal can be selected by mask options MO_SNCK[1..0].

MO_SNCK[1..0]

Key Scan Pulse Width

00

0.5 sck

01

1 sck

10

1.5 sck

11

2 sck

The strength of key-scan signal can also be selected by mask options MO_SNCK[1..0].

MO_SCDRV[1..0]

Key Scan Signal Strength

00

weakest

01

10

11

strongest