參數(shù)資料
型號： UPD70433R-12
廠商： NEC Corp.
元件分類： 16位微控制器
英文描述： V55PITM 16-BIT MICROPROCESSOR
中文描述： V55PITM 16位微處理器
文件頁數(shù)： 66/166頁
文件大?。?/td> 772K
代理商： UPD70433R-12
66
μ
PD70433
Change accordng to DMAC operating
status
Data retention
Release method
13. STANDBY FUNCTIONS
The V55PI has two methods for controlling the operating clock as standby functions designed to reduce power dissipation.
Transition to either of these standby modes is possible by means of a dedicated instruction.
Table 13-1. HALT/STOP Mode Operating Status
Parameter
HALT Mode
STOP Mode
Clock generator
Operating
Internal system clock
Stopped
16–bit timer
Watchdog timer
Hold circuit
Stopped
Serial interface
Operating
Parallel interface
A/D Converter
Interrupt request controller
DMA controller
IORD, IOWR
High level
High level
AD0 to AD15
Bus lines
Retained
A16 to A23
R/W output
High level
High level
Refresh operation
Operating
Stopped
All internal data retained (CPU status,
RAM contents, etc.)
All internal data retained (CPU status,
RAM contents, etc.)
NMI
INTWDT
Maskable interrupt request
RESET input
NMI
RESET input
13.1 HALT MODE
In this mode, the CPU operating clock is halted.
Setting the CPU idle time to the HALT mode enables overall system power dissipation to be reduced. The HALT mode
is entered by executing the HALT instruction.
In the HALT mode the CPU clock and program execution are stopped, and all register and on-chip RAM contents
immediately prior to the stoppage are retained. The status of each hardware unit is shown in Table 13-1.
When the HALT instruction is executed during a DMA transfer, transition to the HALT mode is deferred until the transfer
bus cycle for one DMA request is completed.
相關(guān)PDF資料
PDF描述
UPD70433R-16 V55PITM 16-BIT MICROPROCESSOR
UPD70433GD-12-5BB V55PITM 16-BIT MICROPROCESSOR
UPD70433GD-16-5BB V55PITM 16-BIT MICROPROCESSOR
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UPD70433GJ-16-3EB V55PITM 16-BIT MICROPROCESSOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD70433R-16 制造商:NEC 制造商全稱:NEC 功能描述:V55PITM 16-BIT MICROPROCESSOR
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