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參數(shù)資料
| 型號(hào)： | UPD17242UC-XXX-5A4 |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 4.5 MHz, MICROCONTROLLER, PDSO30 |
| 封裝： | 0.300 INCH, PLASTIC, SSOP-30 |
| 文件頁(yè)數(shù)： | 16/102頁(yè) |
| 文件大?。?/td> | 953K |
| 代理商： | UPD17242UC-XXX-5A4 |
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Data Sheet U15002EJ1V1DS
PD17240, 17241, 17242, 17243, 17244, 17245, 17246
2.3
Stack
A stack is a register used 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 acknowledged.
2.3.1
Stack configuration
Figure 2-5 shows the stack configuration.
A stack consists of a stack pointer (a 4-bit binary counter, the highest bit fixed to 0), five 11-bit (
PD17240)/12-
bit (
PD17241)/13-bit (PD17242, 17243)/14-bit (PD17244, 17245, 17246) address stack registers, and three 6-
bit interrupt stack registers.
Figure 2-5.
Stack Configuration
Address stack registers
(ASR)
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
Address stack register 1
Address stack register 2
Address stack register 3
Address stack register 4
b2
b1
b0
SPb2 SPb1 SPb0
Stack pointer
(SP)
0H
1H
2H
3H
4H
5H
6H
7H
0H
1H
2H
Interrupt stack registers
(INTSK)
BANKSK1
BANKSK2
BCDSK0
BCDSK1
BCDSK2
CMPSK0
CMPSK1
CMPSK2
CYSK0
CYSK1
CYSK2
ZSK0
ZSK1
ZSK2
IXESK0
IXESK1
IXESK2
Address stack register 0
The RESET pin is
internally pulled down
and reset is effected.
b3
0
b12
PD17241
PD17242, 17243
PD17244, 17245, 17246
b4
b3
b2
b5
BANKSK0
b1
b0
Undefined
b13
PD17240
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD178F054 | 78K/0 Series for Instructions | User＇s Manual[10/2001] |
| UPD178F124 | 78K/0 Series for Instructions | User＇s Manual[10/2001] |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD17243 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17243MC-XXX-5A4 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17244 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17244MC-XXX-5A4 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17245 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
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