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參數資料
型號： TPS65920BZCH
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PBGA139
封裝： 10 X 10 MM, 0.65 MM PITCH, GREEN, PLASTIC, NFBGA-139
文件頁數： 66/115頁
文件大小： 1232K
代理商： TPS65920BZCH
SWCS037G
– MAY 2008 – REVISED APRIL 2011
5
Real-Time Clock and Embedded Power Controller
The TPS65930 and TPS65920 devices contain an RTC to provide clock and timekeeping functions and an
EPC to provide battery supervision and control.
5.1
RTC
The RTC provides the following basic functions:
Time information (seconds/minutes/hours) directly in binary-coded decimal (BCD) code
Calendar information (day/month/year/day of the week) directly in BCD code
Interrupt generation periodically (1 second/1 minute/1 hour/1 day) or at a precise time (alarm function)
32-kHz oscillator drift compensation and time correction
Alarm-triggered system wake-up event
5.1.1
Backup Battery
The TPS65030 and TPS65920 devices device implement a backup mode in which a backup battery can
keep the RTC running to maintain clock and time information even if the main supply is not present. If the
backup battery is rechargeable, the device also provides a backup battery charger so it can be recharged
when the main battery supply is present.
The backup domain powers the following:
Internal 32.768-kHz crystal oscillator
RTC
Eight general-purpose (GP) storage registers
Backup domain low-power regulator (VBRTC)
5.2
EPC
The EPC provides five system states for optimal power use by the system, as listed in Table 5-1.
Table 5-1. System States
System State
Description
NO SUPPLY
The system is not powered by any battery.
BACKUP
The system is powered only with the backup battery and maintains
only the VBRTC supply.
WAIT-ON
The system is powered by the main battery and maintains only the
VRRTC supply. It can accept switch-on requests.
ACTIVE
The system is powered by the main battery; all supplies can be
enabled with full current capability.
SLEEP
The main battery powers the system; selected supplies are enabled,
but in low consumption mode.
Three categories of events can trigger state transitions:
Hardware events: Supply/battery insertion, wake-up requests, USB plug, and RTC alarm
Software events: Switch-off commands, switch-on commands, and sleep on commands
Monitoring events: Supply/battery level check, main battery removal, main battery fail, and thermal
shutdown
54
Real-Time Clock and Embedded Power Controller
Copyright
2008–2011, Texas Instruments Incorporated
focus.ti.com: TPS65930/TPS65920
相關PDF資料
PDF描述
TPS65930A2ZCHR SPECIALTY CONSUMER CIRCUIT, PBGA139
TPS65930A2ZCH SPECIALTY CONSUMER CIRCUIT, PBGA139
TPS65930BZCHR SPECIALTY CONSUMER CIRCUIT, PBGA139
TPS65930BZCH SPECIALTY CONSUMER CIRCUIT, PBGA139
TPS65950ZXNR SPECIALTY CONSUMER CIRCUIT, PBGA209
相關代理商/技術參數
參數描述
TPS65920BZCH 制造商:Texas Instruments 功能描述:Power Supply IC
TPS65920BZCHR 功能描述:開關變換器、穩壓器與控制器 Int Pwr Mgmt IC RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
TPS65921B1ZQZ 功能描述:PMIC 解決方案 Integrated Power Mgmt IC RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
TPS65921B1ZQZR 功能描述:PMIC 解決方案 Integrated Power Mgmt IC RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
TPS65921BZQZ 功能描述:PMIC 解決方案 Int Power Mgmt IC RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
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