M48T59Y-70MH6 STMicroelectronics, M48T59Y-70MH6 Datasheet - Page 16

• Manufacturer Part Number: M48T59Y-70MH6
• Description: Real Time Clock R 511-M48T59Y-70MH6E
• Manufacturer: STMicroelectronics

Specifications of M48T59Y-70MH6

• Function: Clock, Calendar, NV Timekeeping RAM, Watchdog Timer, Battery Backup, Alarm
• Rtc Memory Size: 8192 B
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Parallel
• Package / Case: SOIC-28
• Time Format: HH:MM:SS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 10. Alarm interrupt reset waveform
Table 6.
16/32
RPT4
1
1
1
1
0
A0-A12
ACTIVE FLAG BIT
IRQ/FT
alarm condition activates the IRQ/FT pin. To disable the alarm, write '0' to the Alarm Date
Register and RPT1-4. The Alarm Flag and the IRQ/FT output are cleared by a READ to the
Flags Register as shown in
Register is necessary to see that the value of the Alarm Flag has been reset to '0.'
The IRQ/FT pin can also be activated in the battery back-up mode. The IRQ/FT will go low if
an alarm occurs and both the ABE (Alarm in Battery Back-up Mode Enable) and the AFE
are set. The ABE and AFE bits are reset during power-up, therefore an alarm generated
during power-up will only set AF. The user can read the Flag Register at system boot-up to
determine if an alarm was generated while the M48T59/Y/V was in the deselect mode
during power-down.
Alarm repeat mode
RPT3
1
1
1
0
0
Figure 11 on page 17
RPT2
Figure 10 on page
1
1
0
0
0
ADDRESS 1FF0h
15ns Min
illustrates the back-up mode alarm timing.
RPT1
1
0
0
0
0
16. A subsequent READ of the Flags
Once per second
Alarm activated
Once per minute
Once per month
Once per hour
Once per day
HIGH-Z
AI01388B