参数资料
型号: MC34708VM
厂商: Freescale Semiconductor
文件页数: 42/159页
文件大小: 0K
描述: IC POWER MANAGEMENT 206MAPBGA
标准包装: 160
应用: 通用
电源电压: 1.8 V ~ 4.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 206-LFBGA
供应商设备封装: 206-MAPBGA(13x13)
包装: 托盘
Functional Block Description
Table 25. Turn OFF Voltage Threshold
VBAT_TRKL[1:0]
00
01
10
11
Turn off Voltage threshold
2.8
2.9
3.0 (default)
3.1
7.5.3.6
Timers
The different timers as used by the state machine are listed in Table 26 . This listing does not include RTC timers for timekeeping.
A synchronization error of up to one clock period may occur with respect to the occurrence of an asynchronous event, the duration
listed below is therefore the effective minimum time period.
Table 26. Timer Main Characteristics
Timer
Under-voltage Timer
Reset Timer
Watchdog Timer
Power Cut Timer
7.5.3.6.1
Timing Diagrams
A Turn On event timing diagrams shown in Figure 7 .
Duration
4.0 ms
40 ms
128 ms
Programmable 0 to 8 seconds
in 31.25 ms steps
Clock
32 k/32
32 k/32
32 k/32
32 k/1024
Turn On Event
System Core Active
Turn On Verification
Power Up Sequencer
UV Masking
RESETB
INT
WDI
Sequencer time slots
ow
WDI Pulled Low
8 ms
8 ms
20 ms
12 ms
128 ms
1 - Off
2 - Cold Start
3 - Watchdog
4 - On
3- Watchdog
1 - Off
Power up of the system upon a Turn On Event followed by a transition to the On state if WDI is pulled high
... or transition to Off state if WDI remains low
Turn on Event is based on PWRON being pulled low
= Indeterminate State
Figure 7. Power Up Timing Diagram
MC34708
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
42
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