參數(shù)資料
型號(hào)： EM78458
英文描述： Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0&degC to 70°C; Package: 16-QFN
中文描述： 8位微控制器的通用產(chǎn)品
文件頁數(shù)： 18/57頁
文件大小： 854K
代理商： EM78458
EM78458/459
MASK ROM
This specification is subject to change without prior notice.
2002/03/01
25
(1) External reset input on /RESET pin.
(2) WDT time-out (if enabled).
(3) Port 6 input status change (if enabled).
(4) Comparator high.
The first two cases will cause the EM78458/459 to reset. The T and P flags of R3 can be used to
determine the source of the reset (wake-up). Case 3 is considered the continuation of program
execution and the global interrupt ("ENI" or "DISI" being executed) decides whether or not the
controller branches to the interrupt vector following wake-up. If ENI is executed before SLEP, the
instruction will begin to execute from the address 0x8 after wake-up. If DISI is executed before SLEP,
the execution will restart from the instruction right next to SLEP after wake-up.
Only one of the Cases 2, to 4 can be enabled before entering into sleep mode. That is,
[a] if Port 6 Input Status Change Interrupt is enabled before SLEP , WDT must be disabled by
software. However, the WDT bit in the option register remains enabled. Hence, the
EM78458/459 can be awakened only by Case 1 or 3.
[b] if WDT is enabled before SLEP, Port 6 Input Status Changed Interrupt must be disabled. Hence,
the EM78458/459 can be awakened only by Case 1 or 2. Refer to the section on Interrupt for
further details.
[c] if Comparator High Interrupt is enabled before SLEP, WDT must be disabled by software.
However, the WDT bit in the option register remains enabled. Hence, the EM78458/459 can be
awakened only by Case 1 or 4.
If Port 6 Input Status Change Interrupt is used to wake up the EM78458/459 (as in Case [a] above),
the following instructions must be executed before SLEP:
MOV A, @0Bxx000110
; Select internal TCC clock
CONTW
CLR R1
; Clear TCC and prescaler
MOV A, @0Bxxxx1110
; Select WDT prescaler
CONTW
WDTC
; Clear WDT and prescaler
MOV A, @0B0xxxxxxx
; Disable WDT
IOW RE
MOV R6, R6
; Read Port 6
MOV A, @0B00000x1x
; Enable Port 6 input change interrupt
相關(guān)PDF資料
PDF描述
EM78459 Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 14-SOIC
EM78450 Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: 0&degC to 70°C; Package: 16-QFN
EM78612 Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Pre-POR OVP; Temperature Range: -40°C to 85°C; Package: 16-QFN
EM78P451 Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Protection Features; Temperature Range: 0&degC to 70°C; Package: 16-QFN
EM83050 Dual Advanced Synchronous Rectified Buck MOSFET Drivers with Protection Features; Temperature Range: -40°C to 85°C; Package: 16-QFN T&R
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EM78458AM 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM
EM78458AP 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM
EM78459 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM
EM78459AK 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM
EM78459AM 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:8-Bit Microcontroller with MASK ROM
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*