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参数资料
| 型号： | M48T212Y-85MH6 |
| 厂商： | 意法半导体 |
| 英文描述： | Shielded Multiconductor Cable; Number of Conductors:7; Conductor Size AWG:24; No. Strands x Strand Size:7 x 32; Jacket Material:Polyvinylchloride (PVC); Shielding Material:Aluminum Foil/Polyester Tape/Tinned Copper Braid RoHS Compliant: Yes |
| 中文描述： | 5V/3.3V计时[控制器 |
| 文件页数： | 6/23页 |
| 文件大小： | 150K |
| 代理商： | M48T212Y-85MH6 |
M48T212Y, M48T212V
6/23
Table 7B. DC Characteristics for M48T212Y
(T
A
= 0 to 70
°
C; V
CC
= 4.5V to 5.5V)
Symbol
Parameter
Note: 1. Outputs deselected.
2. RSTIN1 andRSTIN2 internally pulled-up to V
CC
through 100K
resistor. WDI internally pulled-down to V
SS
through 100K
resistor.
3. For IRQ/FT & RST pins (Open Drain).
4. Conditioned outputs (E1
CON
- E2
CON
) 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 TIMEKEEPER Controller chip V
CC
specification.
Test Condition
Min
Typ
Max
Unit
I
LI(1,2)
Input Leakage Current
0V
≤
V
IN
≤
V
CC
±
1
μ
A
I
LO(1)
Output Leakage Current
0V
≤
V
OUT
≤
V
CC
±
1
μ
A
I
CC
Supply Current
Outputs open
8
15
mA
I
CC1
Supply Current (Standby) TTL
E = V
IH
5
mA
I
CC2
Supply Current (Standby) CMOS
E = V
CC
–0.2
3
mA
I
BAT
Battery Current OSC ON
575
800
nA
Battery Current OSC OFF
100
nA
V
IL
Input Low Voltage
–0.3
0.8
V
V
IH
Input High Voltage
2.2
V
CC
+ 0.3
V
V
OL
Output Low Voltage
I
OL
= 2.1mA
0.4
V
Output Low Voltage (open drain)
(3)
I
OL
= 10mA
0.4
V
V
OH
Output High Voltage
I
OH
= –1.0mA
2.4
V
V
OHB(4)
V
OH
Battery Back-up
I
OUT2
= –1.0
μ
A
2.0
3.6
V
I
OUT1(5)
V
OUT
Current (Active)
V
OUT1
> V
CC
–0.3
100
mA
I
OUT2
V
OUT
Current (Battery Back-up)
V
OUT2
> V
BAT
–0.3
100
μ
A
V
PFD
Power-fail Deselect Voltage
4.2
4.35
4.5
V
V
SO
Battery Back-up Switchover Voltage
3.0
V
V
BAT
Battery Voltage
3.0
V
The M48T212Y/V also hasits own Power-Fail De-
tect circuit. This control circuitry constantly moni-
tors the supply voltage for an out of tolerance
condition. When V
CC
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 V
CC
falls, the control circuitry automatically switchesto
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 thesixteen 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).
相关PDF资料 |
PDF描述 |
|---|---|
| M48T212Y-70MH1 | 5V/3.3V TIMEKEEPER[ CONTROLLER |
| M48T248V-70PM1 | FILTER SAW 312.2MHZ REMOTE SMD |
| M48T248V-70PM1TR | FILTER SAW 312.2MHZ REMOTE SMD |
| M48T248V-85PM1 | FILTER SAW 313.85MHZ REMOTE SMD |
| M48T248V | 5.0 or 3.3V, 1024K TIMEKEEPER SRAM with PHANTOM |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M48T212Y-85MH6E | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5V/3.3V TIMEKEEPER CONTROLLER Supervisor |
| M48T212Y-85MH6F | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5V/3.3V TIMEKEEPER CONTROLLER Supervisor |
| M48T212Y-85MH6TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5V/3.3V TIMEKEEPER[ CONTROLLER |
| M48T212YMH | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5V/3.3V TIMEKEEPER[ CONTROLLER |
| M48T212YSH | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:5V/3.3V TIMEKEEPER[ CONTROLLER |
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