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Numéro de référence | M41T64 | ||
Description | (M41T62 - M41T65) Serial Access Real-Time Clock | ||
Fabricant | ST Microelectronics | ||
Logo | |||
1 Page
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M41T62, M41T63
M41T64, M41T65
Serial Access Real-Time Clock with Alarms
Feature summary
■ Counters for tenths/hundredths of seconds,
seconds, minutes, hours, day, date, month,
year, and century
■ 32 KHz crystal oscillator integrating load
capacitance and high crystal series resistance
operation
■ Oscillator stop detection monitors clock
operation
■ Serial interface supports I2C bus (400kHz)
■ 350nA timekeeping current @ 3V
■ Low operating current of 35µA (@400kHz)
■ Timekeeping down to 1.0V
■ 1.3V to 4.4V I2C bus operating voltage
■ 32KHz square wave on power-up to drive a
microcontroller in low power mode
(M41T62/63/64)
■ Programmable (1Hz to 32KHz) square wave
(M41T63/64)
■ Programmable alarm with interrupt function
(M41T62/65)
■ Accurate programmable watchdog
(from 62.5ms to 31 min)
■ Software clock calibration to compensate
deviation of crystal due to temperature
■ Automatic leap year compensation
QFN16 (Q) 3mm x 3mm
VSOJ20 (47.6mm2)
GND Plane Guard Ring (21.5mm2)
SMT
CRYSTAL
1 XI
2 XO
3
4 ST QFN16
AI11107
32KHz crystal + QFN 16 vs. VSOJ20
■ Operating temperature of –40 to 85°C
■ Lead-free 16-pin QFN package
■ Lithium ion rechargeable operation
Table 1. Device options
Basic RTC Alarms
M41T62
M41T63
M41T64
M41T65
✔
✔
✔
✔
✔
✔
✔
✔
Table 1
OSC fail
detect
✔
✔
✔
✔
Watchdog
timer
Calibration
SQW
output
✔ ✔✔
✔ ✔✔
✔ ✔✔
✔✔
IRQ WDO F32K
output output output
✔
✔
✔
✔✔
August 2006
Rev 11
1/41
www.st.com
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Pages | Pages 30 | ||
Télécharger | [ M41T64 ] |
No | Description détaillée | Fabricant |
M41T60 | Serial Access Real-Time Clock | ST Microelectronics |
M41T62 | (M41T62 - M41T65) Serial Access Real-Time Clock | ST Microelectronics |
M41T63 | (M41T62 - M41T65) Serial Access Real-Time Clock | ST Microelectronics |
M41T64 | (M41T62 - M41T65) Serial Access Real-Time Clock | ST Microelectronics |
US18650VTC5A | Lithium-Ion Battery | Sony |
TSPC106 | PCI Bus Bridge Memory Controller | ATMEL |
TP9380 | NPN SILICON RF POWER TRANSISTOR | Advanced Semiconductor |
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