參數(shù)資料
型號(hào)： W925C240
英文描述： Telephone Controller
中文描述： 電話控制器
文件頁(yè)數(shù)： 18/66頁(yè)
文件大?。?/td> 930K
代理商： W925C240
W925E/C240
8-bit CID Microcontroller
Address: 90h
Revision : A6
-18-
Release Date : 2002/7/2
Mnemonic: P1
P1.7-0: P1 can be selected as input or output mode by the P1IO register , At initial reset , P1IO is
set to 1, so P1 is used as input mode . When P1IO is set to 0 , the P1 is used as
CMOS output mode . When P1EF are set and P1IO are set as input mode , P1 can be
used as external interrupt source. The functions are listed below .
P1.0 : INT2.0
P1.1 : INT2.1
P1.2 : INT2.2
P1.3 : INT2.3
P1.4 : INT3.0
P1.5 : INT3.1 External Interrupt 3
P1.6 : INT3.2
External Interrupt 3
P1.7 : INT3.3
External Interrupt 3
External Interrupt 2
External Interrupt 2
External Interrupt 2
External Interrupt 2
External Interrupt 3
EXTERNAL INTERRUPT FLAG
(initial=00H)
Bit:
7
-
6
-
5
-
4
3
2
1
0
COMPF
DIVF
CIDF
IE3
IE2
Mnemonic: EXIF
Address: 91h
COMPF: Comparator flag. Set by hardware when RESC bit is from low to high.
DIVF: Divider overflow flag.
CIDF: CID interrupt flag. Set by hardware when at least one of CID flags is set.
IE3:
External Interrupt 3 flag. Set by hardware when a falling edge is detected on INT3.
IE2:
External Interrupt 2 flag. Set by hardware when a falling edge is detected on INT2.
ROM PAGE POINTER
(initial=00H)
Bit:
7
-
6
-
5
4
3
-
2
-
1
-
0
LT1
LT0
PG
Mnemonic: RPAGE
Address: 92h
LT1 and LT0 determine the ROM page of the instruction MOVC reading the content from ROM.
ROM PAGE
Rom address
(LT1,LT0) = (0, 0)
Page 0
00000H-0FFFFH
(LT1,LT0) = (0, 1)
Page 1
10000H-1FFFFH
(LT1,LT0) = (1, 0)
Page 2
20000H-2FFFFH
(LT1,LT0) = (1, 1)
Page 3
30000H-3FFFFH
PG = 0 indicates the executing program is in page 0, from 00000H-0FFFFH
PG = 1 indicates the executing program is in page 1, from 10000H-1FFFFH
P1 PINS STATUS
(initial=00H)
Bit:
7
6
5
4
3
2
1
0
P1.7SR P1.6SR P1.5SR P1.4SR P1.3SR P1.2SR P1.1SR P1.0SR
Mnemonic: P1SR
Address: 93h
P1SR: Set when a falling edge is detected on the corresponding P1 pin, clear by software.
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