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| 型號(hào)： | HE84G770B |
| 廠商： | King Billion Electronics Co., Ltd. |
| 英文描述： | 8-BIT MICRO-CONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁(yè)數(shù)： | 53/61頁(yè) |
| 文件大小： | 817K |
| 代理商： | HE84G770B |
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22.
Extension Register Access
King Billion Electronics Co., Ltd
駿
億
電
子
股
份
有
限
公
司
HE84G770
HE80004H SERIES
October 31, 2003
This specification is subject to change without notice. Please contact sales person for the latest version before use.
53
Version:V1.1
The extension registers can be accessed through the extension port control registers EXTAS and
EXTDA. User can read/write the extension register easily and the control timing is generated by
hardware automatically. The following code shows how to access the extension registers.
Read Extension Register:
LDA
#0x00h ; load #0x00h data to A Register
STA
EXTAS
; store A register data to the extension port address register.
LDA
EXTDA
; store the extension register (0x00h) data to A Register.
Write Extension Register:
LDA
#0x03h ; load #0x03h data to A Register
STA
EXTAS
; store A register data to the extension port address register.
LDA
#0x18h ; load #0x18h data to A Register
STA
EXTDA
; store A register data to the extension port data register.
23.
Summary of Registers and Mask Options
All the registers and mask options used in this chip are listed in the following tables.
Address NAME
00H
TPL
01H
TPH
02H
IER
-
-
INT_EX
03H
T1L
04H
T1H
05H
T2L
06H
T2H
07H
SP
08H
DP
09H
OP1
DRDY
STOP
SLOW
0AH
OP2
IDLE
PNWK
TCWK
0BH
PP
0CH
PRTC
PRTC[7] PRTC[6]
PRTC[5] PRTC[4]
0DH
PRTD
0EH
PWMC
0FH
LCDC
-
-
CLR_GP
13H
VOC
-
PWM O/P driver
14H
PRT14
15H
PRT15
16H
TPP
17H
PRT17
20H
EXTAS
Extension Port Address Register
21H
EXTDA
Extension Port Data Register
22H
KEYR0
R
RI[1]
RI[0]
23H
KEYR1
0
RI[1]
RI[0]
Field
Mode
R/W
R/W
R/W
W
W
W
W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W
W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RESET
xxxx xxxx
xxxx xxxx
--00 0000
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
1111 1111
xxxx xxxx
1000 00xx
0xx0 ----
0000 0000
1111 ----
1111 1111
0000 0000
xx1x xx10
x000 0000
1111 1111
1111 1111
0000 0000
1111 1111
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
Table Pointer Low Byte
Table Pointer High Byte
TB
Timer 1 Low Byte
Timer 1 High Byte
Timer 2 Low Byte
Timer 2 High Byte
Stack Pointer
RAM Pointer
INTE
TBE
RAM Page Pointer
INT1
T1
T2
INT2
T2E
T1E
TBS[3..0]
Z
C
Reserved
I/O Port D
PWM Data
Reserved
PWME
BLANK LCDE
DAC
PWM
OP
I/O Port 14
I/O Port 15
ROM Table Page Pointer
I/O Port 17
CI[4]
CI[4]
CI[3]
CI[3]
CI[2]
CI[2]
CI[1]
CI[1]
CI[0]
CI[0]
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