參數(shù)資料
型號(hào)： M48T212V-70MH6
廠商： STMICROELECTRONICS
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： 0 TIMER(S), REAL TIME CLOCK, PDSO44
封裝： SNAPHAT, PLASTIC, SO-44
文件頁(yè)數(shù)： 20/23頁(yè)
文件大?。?/td> 150K
代理商： M48T212V-70MH6
M48T212Y, M48T212V
6/23
Table 7B. DC Characteristics for M48T212Y
(TA = 0 to 70°C; VCC = 4.5V to 5.5V)
Note: 1. Outputs deselected.
2. RSTIN1 and RSTIN2 internally pulled-up to VCC through 100K resistor. WDI internally pulled-down to VSS through 100K resistor.
3. For IRQ/FT & RST pins (Open Drain).
4. Conditioned outputs (E1CON -E2CON) can only sustain CMOS leakage currents in the battery back-up mode. Higher leakage cur-
rents will reduce battery life.
5. External SRAM must match TIMEKEE PER Controller chip VCC specification.
Symbol
Parameter
Test Condition
Min
Typ
Max
Unit
ILI
(1,2)
Input Leakage Current
0V
≤ VIN ≤ VCC
±1
A
ILO
(1)
Output Leakage Current
0V
≤ VOUT ≤ VCC
±1
A
ICC
Supply Current
Outputs open
8
15
mA
ICC1
Supply Current (Standby) TTL
E= VIH
5mA
ICC2
Supply Current (Standby) CMOS
E= VCC –0.2
3mA
IBAT
Battery Current OSC ON
575
800
nA
Battery Current OSC OFF
100
nA
VIL
Input Low Voltage
–0.3
0.8
V
VIH
Input High Voltage
2.2
VCC + 0.3
V
VOL
Output Low Voltage
IOL = 2.1mA
0.4
V
Output Low Voltage (open drain) (3)
IOL = 10mA
0.4
V
VOH
Output High Voltage
IOH = –1.0mA
2.4
V
VOHB
(4)
VOH Battery Back-up
IOUT2 = –1.0A
2.0
3.6
V
IOUT1
(5)
VOUT Current (Active)
VOUT1 >VCC –0.3
100
mA
IOUT2
VOUT Current (Battery Back-up)
VOUT2 >VBAT –0.3
100
A
VPFD
Power-fail Deselect Voltage
4.2
4.35
4.5
V
VSO
Battery Back-up Switchover Voltage
3.0
V
VBAT
Battery Voltage
3.0
V
The M48T212Y/V also has its own Power-Fail De-
tect circuit. This control circuitry constantly moni-
tors the supply voltage for an out of tolerance
condition. When VCC is out of tolerance, the circuit
write protects the TIMEKEEPER register data and
external SRAM, providing data security in the
midst of unpredictable system operation. As VCC
falls, the control circuitry automatically switches to
the battery, maintaining data and clock operation
until valid power is restored.
Address Decoding
The M48T212Y/V accommodates 4 address lines
(A3-A0) which allow access to the sixteen bytes of
the TIMEKEEPER clock registers. All TIMEKEEP-
ER registers reside in the controller chip itself. All
TIMEKEEPER registers are accessed by enabling
E (Chip Enable).
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M48T212V-70MH6E 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V/3.3V TIMEKEEPER CONTROLLER Supervisor
M48T212V-70MH6F 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V/3.3V TIMEKEEPER CONTROLLER Supervisor
M48T212V-70MH6TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V/3.3V TIMEKEEPER[ CONTROLLER
M48T212V-85MH1 功能描述:監(jiān)控電路 SRAM TK 16X8 85ns RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
M48T212V-85MH1E 功能描述:監(jiān)控電路 SRAM TK 16X8 85ns RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
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