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CM200S-32.768KDZB-UT PDF预览

CM200S-32.768KDZB-UT

更新时间: 2024-02-18 07:23:15
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描述
SPI Real-Time Clock Calendar

CM200S-32.768KDZB-UT 技术参数

是否Rohs认证: 符合生命周期:Obsolete
Reach Compliance Code:unknown风险等级:5.84
Base Number Matches:1

CM200S-32.768KDZB-UT 数据手册

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MCP795WXX/MCP795BXX  
SPI Real-Time Clock Calendar with  
Enhanced Features and Battery Switchover  
Device Selection Table  
User Memory:  
32 kHz  
Boot-up (Bytes)  
SRAM EEPROM Unique  
• 64-Byte Battery-Backed SRAM  
Part Number  
(Kbits)  
ID  
• 2 Kbit and 1 Kbit EEPROM Memory:  
MCP795W20  
MCP795W10  
MCP795W21  
MCP795W11  
MCP795W22  
MCP795W12  
MCP795B20  
MCP795B10  
MCP795B21  
MCP795B11  
MCP795B22  
MCP795B12  
No  
No  
64  
64  
64  
64  
64  
64  
64  
64  
64  
64  
64  
64  
2
1
2
1
2
1
2
1
2
1
2
1
Blank  
- Software block write-protect (¼, ½, or entire  
array)  
Blank  
- Write Page mode (up to 8 bytes)  
- Endurance: 1M erase/write cycles  
No  
EUI-48  
EUI-48  
EUI-64  
EUI-64  
Blank  
No  
• 128-Bit Unique ID in Protected Area of EEPROM:  
- Available blank or preprogrammed  
- EUI-48™ or EUI-64™ MAC address  
- Unlock sequence for user programming  
No  
No  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Blank  
EUI-48  
EUI-48  
EUI-64  
EUI-64  
Enhanced Features:  
• SPI Clock Speed up to 10 MHz  
• Programmable Watchdog Timer:  
- Dedicated watchdog output pin  
- Dual retrigger using SPI bus or EVHS digital  
input  
Note:  
Watchdog Timer and Event Detects in all devices.  
Timekeeping Features:  
• Dual Configurable Event Detect Inputs:  
• Real-Time Clock/Calendar:  
- Hours, Minutes, Seconds, Hundredth of  
Seconds, Day of Week, Month, Year, Leap  
Year  
- High-Speed Digital Event Detect (EVHS) with  
pulse count for 1st, 4th,16th or 32nd event  
- Low-Speed Event Detect (EVLS) with  
programmable debounce delays of 31 msec  
and 500 msec  
• Crystal Oscillator requires External 32,768 kHz  
Tuning Fork Crystal and Load Capacitors.  
- Edge triggered (rising or falling)  
- Operates from VCC or VBAT  
• Clock Out Function:  
- 1Hz, 4.096 kHz, 8.192 kHz, 32.768 kHz  
• 32 kHz Boot-up Clock at Power-up (MCP795BXX)  
• 2 Programmable Alarms – Supports IRQ or WDO  
• Operating Temperature Ranges:  
- Industrial (I Temp): -40°C to +85°C.  
• Packages include 14-Lead SOIC and TSSOP  
• Programmable open drain output – Alarm or  
Interrupt  
SOIC/TSSOP  
• On-Chip Digital Trimming/Calibration:  
- +/- 255 PPM range in 1 PPM steps  
X1  
X2  
1
14  
Vcc  
2
3
13  
12  
CLKOUT/BOOT  
EVHS  
• Power-Fail Time-Stamp @ Battery Switchover:  
- Logs time when VCC fails and VCC is restored  
V
BAT  
WDO  
IRQ  
4
5
11  
10  
EVLS  
SCK  
Low-Power Features:  
• Wide Operating Voltage:  
- VCC: 1.8V to 5.5V  
CS  
6
7
9
8
SI  
VSS  
SO  
- VBAT: 1.3V to 5.5V  
• Low Operating Current:  
- VCC Standby Current < 1uA @ 3V  
- VBAT Timekeeping Current: <700nA @ 1.8V  
Note:  
MCP795XXX is used in this document as a  
generic part number for the MCP795WXX,  
MCP795BXX devices.  
• Automatic Battery Switchover from VCC to VBAT:  
- Backup power for timekeeping and SRAM  
retention  
2011 Microchip Technology Inc.  
Preliminary  
DS22280A-page 1  

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