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參數(shù)資料
| 型號： | UPD17201A |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER WITH LCD CONTROLLER/DRIVER AND A/D CONVERTER FOR INFRARED REMOTE CONTROL TRANSMITTERS |
| 中文描述： | 4位單片機與LCD控制器/驅動器和A / D轉換器紅外遙控遞質(zhì) |
| 文件頁數(shù)： | 15/120頁 |
| 文件大?。?/td> | 516K |
| 代理商： | UPD17201A |
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μ
PD17201A, 17207
15
Fig. 4-4 Stack Pointer
4.3
STACK
A stack is a register to save a program return address and the contents of system registers (to be described later)
when a subroutine is called or when an interrupt is accepted.
4.3.1
Stack Configuration
A stack consists of a stack pointer (a 3-bit binary counter), five 12-bit address stack registers (ASR), and three
7-bit interrupt stack registers (INTSK). Refer to
Fig. 4-3
.
The stack pointer specifies the addresses of the address stack registers.
The value of this pointer is initialized to 5H at reset.
When the value of the stack pointer is 6H or 7H, the WDOUT pin goes low.
Fig. 4-3 Stack Configuration
Address Stack Registers
(ASR)
b
11
b
10
b
9
b
8
b
7
b
6
b
5
b
4
b
3
b
2
b
1
b
0
Address stack register 1
Address stack register 2
Address stack register 3
Address stack register 4
b
2
b
1
b
0
SPb
2
SPb
1
SPb
0
Stack Pointer
(SP)
0H
1H
2H
3H
4H
5H
6H
7H
0H
1H
2H
Interrupt Stack Registers
(INTSK)
BANKSK0
BANKSK1
BANKSK2
BCDSK0
BCDSK1
BCDSK2
CMPSK0
CMPSK1
CMPSK2
CYSK0
CYSK1
CYSK2
ZSK0
ZSK1
ZSK2
IXESK0
IXESK1
IXESK2
Address stack register 0
Undefined
Undefined
Undefined
WDOUT pin goes low
when the contents
of the stack pointer
are 6H-7H.
RF: address 01
Bit 3
Bit 2
Bit 1
Bit 0
0
1
0
1
0
SP
R/W
Initial value at reset
Read/write
Read = R, Write = W
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| UPD17201AGF | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER WITH LCD CONTROLLER/DRIVER AND A/D CONVERTER FOR INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17201AGF-XXX-3B9 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| UPD17202A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UPD17202AGF-011 Preliminary Data Sheet | Data Sheet[05/1997] |
| UPD17202AGF-011 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER WITH LCD CONTROLLER/DRIVER AND KEY SCAN CIRCUIT FOR FPC FRONT PANEL CONTROLLER |
| UPD17202AGF-011-3BE | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER WITH LCD CONTROLLER/DRIVER AND KEY SCAN CIRCUIT FOR FPC FRONT PANEL CONTROLLER |
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