參數資料
型號: M4T32-BR12SHx
廠商: 意法半導體
英文描述: Serial real-time clock with 44 bytes NVRAM and reset
中文描述: 串行實時與44字節(jié)的NVRAM和復位時鐘
文件頁數: 1/41頁
文件大?。?/td> 225K
代理商: M4T32-BR12SHX
November 2007
Rev 5
1/41
1
M41T94
Serial real-time clock with 44 bytes NVRAM and reset
Features
Counters for tenths/hundredths of seconds,
seconds, minutes, hours, day, date, month,
year, and century
32KHz crystal oscillator integrating load
capacitance (12.5pF) providing exceptional
oscillator stability and high crystal series
resistance operation
Serial peripheral interface (2MHz SPI)
Ultra-low battery supply current of 500nA (max)
2.7 to 5.5V operating voltage
2.5 to 5.5V oscillator operating voltage
Battery low flag
Automatic switchover and deselect circuitry
44 bytes of general purpose RAM
Programmable alarm and interrupt function
(valid even during battery back-up mode)
Accurate programmable watchdog timer (from
62.5ms to 128s)
Microprocessor power-on reset
Choice of power-fail deselect voltages
(V
CC
= 2.7 to 5.5V):
– THS = V
SS
; 2.55V
V
PFD
2.70V
– THS = V
CC
; 4.20V
V
PFD
4.50V
Packaging includes a 28-lead SOIC and
SNAPHAT
top (to be ordered separately) or
16-lead SOIC
28-lead SOIC package provides direct
connection for a SNAPHAT top which contains
the battery and crystal
RoHS compliant
– Lead-free second level interconnect
28
1
16
1
SO16 (MQ)
SOH28 (MH)
SNAPHAT (SH)
battery & crystal
www.st.com
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M-4-TR-GR 功能描述:罩類、盒類及殼類產品 2.2X2.8X.7 GR RoHS:否 制造商:Bud Industries 產品:Boxes 外部深度:6.35 mm 外部寬度:6.35 mm 外部高度:2.56 mm NEMA 額定值: IP 等級: 材料:Acrylonitrile Butadiene Styrene (ABS) 顏色:Red
M-4-TR-GY 功能描述:罩類、盒類及殼類產品 2.2X2.8X.7 GY RoHS:否 制造商:Bud Industries 產品:Boxes 外部深度:6.35 mm 外部寬度:6.35 mm 外部高度:2.56 mm NEMA 額定值: IP 等級: 材料:Acrylonitrile Butadiene Styrene (ABS) 顏色:Red
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