M48T201Y-70MH1E STMicroelectronics, M48T201Y-70MH1E Datasheet - Page 18

• Manufacturer Part Number: M48T201Y-70MH1E
• Description: IC SUPERVISOR TIMEKPR 5V 44-SOH
• Manufacturer: STMicroelectronics
• Series: Timekeeper®r
• Type: Clock/Calendar/NVSRAMr

Specifications of M48T201Y-70MH1E

• Memory Size: External
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-SOH
• Number Of Voltages Monitored: 1
• Monitored Voltage: 3.3 V, 5 V
• Manual Reset: Not Resettable
• Watchdog: Watchdog
• Battery Backup Switching: Backup
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Supply Current (typ): 15000 uA
• Maximum Power Dissipation: 1000 mW
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Power Fail Detection: Yes
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-2840-5; M48T201Y-70MH1

Clock operation
Note:
Table 5.
Keys:
18/37
Address
7FFFEh
7FFFDh
7FFFCh
7FFFBh
7FFFFh
7FFFAh
7FFF9h
7FFF8h
7FFF7h
7FFF6h
7FFF5h
7FFF4h
7FFF3h
7FFF2h
7FFF1h
7FFF0h
S = Sign bit
FT = Frequency test bit
R = READ bit
W = WRITE bit
ST = Stop bit
0 = Must be set to '0'
WDS = Watchdog steering bit
AF = Alarm flag
BL = Battery low flag
SQWE = Square wave enable bit
BMB0-BMB4 = Watchdog multiplier bits
RB0-RB1 = Watchdog resolution bits
AFE = Alarm flag enable flag
ABE = Alarm in battery backup mode enable bit
RPT1-RPT5 = Alarm repeat mode bits
WDF = Watchdog flag
RS0-RS3 = SQW frequency
It is not necessary to set the WRITE bit when setting or resetting the FREQUENCY TEST
bit (FT) or the STOP bit (ST).
TIMEKEEPER
RPT4
RPT3
RPT2
RPT1
WDS
WDF
AFE
D7
ST
W
0
0
0
0
0
SQWE
BMB4
RPT5
D6
FT
AF
1000 years
R
0
0
0
0
Alarm 10 seconds
10 years
Alarm 10 minutes
®
register map
10 seconds
10 minutes
BMB3
ABE
D5
Al. 10 hours
0
S
0
Al. 10 date
0
10 hours
10 date
Al.10M
BMB2
10 M
D4
BL
0
Data
BMB1
RS3
D3
0
Hours (24-hour format)
Calibration
Date: Day of month
Alarm seconds
Alarm minutes
BMB0
Alarm month
Alarm hours
RS2
Alarm date
D2
100 years
Seconds
Minutes
Month
Year
Day
RB1
RS1
D1
RB0
RS0
D0
Al. seconds
Al. minutes
Watchdog
Al. month
Al. hours
Seconds
Minutes
Century
Al. date
Control
Month
Hours
M48T201Y, M48T201V
Flags
Date
Year
Day
Function/range
BCD format
00-99
01-12
01-31
01-07
00-23
00-59
00-59
01-12
01-31
00-23
00-59
00-59
00-99