參數(shù)資料
型號(hào)： UPD17201AGF
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(jī)與LCD控制器/驅(qū)動(dòng)器和A / D轉(zhuǎn)換器紅外遙控遞質(zhì)
文件頁(yè)數(shù)： 16/120頁(yè)
文件大?。?/td> 516K
代理商： UPD17201AGF
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μ
PD17201A, 17207
16
4.3.2
Function of Stack
The address stack register stores a return address when the subroutine call instruction or table reference instruction
(first instruction cycle) is executed or when an interrupt is accepted. It also stores the contents of the address registers
(ARs) when a stack manipulation instruction (PUSH AR) is executed.
The WDOUT pin goes low if a subroutine call or interrupt exceeding 5 levels is executed.
The interrupt stack register (INTSK) saves the contents of the bank register (BANK) and program status word
(PSWORD) when an interrupt is accepted. The saved contents are restored when an interrupt return (RETI) instruction
is executed.
INTSK saves data each time an interrupt is accepted, but
the data stored first is lost if more than 3 levels of
interrupts occur
.
4.3.3
Stack Pointer (SP) and Interrupt Stack Pointer
Table 4-1 shows the operations of the stack pointer (SP).
The stack pointer can take eight values, 0H-07. Because there are only five stack registers available, however,
the WDOUT pin goes low if the value of SP is 6 or greater
.
Table 4-1 Operations of Stack Pointer
Instruction
Value of Stack Pointer (SP)
Counter of Interrupt Stack Register
CALL addr
CALL @AR
MOVT DBF, @AR
–1
0
(1st Instruction Cycle)
PUSH AR
When Interrupt Is Accepted
–1
–1
RET
RETSK
MOVT DBF, @AR
+1
0
(2nd Instruction Cycle)
POP AR
RETI
+1
+1
相關(guān)PDF資料
PDF描述
UPD17207 4-BIT SINGLE-CHIP MICROCONTROLLER WITH LCD CONTROLLER/DRIVER AND A/D CONVERTER FOR INFRARED REMOTE CONTROL TRANSMITTERS
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UPD17202AGF-011-3BE Circular Connector; No. of Contacts:56; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:25-4 RoHS Compliant: No
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
UPD17202AGF-XXX-3BE 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
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