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參數(shù)資料
| 型號(hào)： | PCF50603 |
| 廠(chǎng)商： | NXP Semiconductors N.V. |
| 英文描述： | Controller for power supply and battery management |
| 中文描述： | 控制器電源和電池管理 |
| 文件頁(yè)數(shù)： | 10/28頁(yè) |
| 文件大小： | 147K |
| 代理商： | PCF50603 |
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2003 Oct 31
10
Philips Semiconductors
Preliminary specification
Controller for power supply
and battery management
PCF50603
8
FUNCTIONAL DESCRIPTION
8.1
On/off control
8.1.1
O
PERATING STATES
The PCF50603 has four operating states (see Fig.3):
NOPOWER
SAVE
STANDBY
ACTIVE.
handbook, full pagewidth
MDB681
NOPOWER
VBAT < VVERY_LOW_BAT
AND
VSAVE < VVERY_LOW_BACK
AND
VCHG < VVERY_LOW_BAT
SAVE
VBAT < VVERY_LOW_BAT
AND
VSAVE > VVERY_LOW_BACK
OR
VCHG > VVERY_LOW_BAT
STANDBY
VBAT > VVERY_LOW_BAT
ACTIVE
VBAT > VLOW_BAT
Fig.3 State diagram.
8.1.2
R
ESET GENERATION
TheOOCgeneratesaninternalandanexternalreseteach
time the system goes from STANDBY to ACTIVE state. All
registersfortheregulatorsandconvertersareresettotheir
default values.
The RSTHC_N is kept LOW for minimum 10 ms after
entering the ACTIVE state. If the IOREG supply is
switched off, RSTHC_N becomes LOW again (see Fig.4).
A special condition occurs when the main battery voltage
drops below the V
VERY_LOW_BAT
limit of typically 2.7 V; the
RSTHC_N is asserted in order to shut down the host
controller immediately (see Fig.5).
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