Datasheet > MCP795W21

MCP795W21

更新时间： 2024-11-23 11:58:19

品牌	Logo	应用领域
MAS		时钟
页数	文件大小	规格书
54页	969K
描述
SPI Real-Time Clock Calendar

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中文翻译

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数据手册

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MCP795W21 数据手册

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)

• 2 Kbit and 1 Kbit EEPROM Memory:

MCP795W20

MCP795W10

MCP795W21

MCP795W11

MCP795W22

MCP795W12

MCP795B20

MCP795B10

MCP795B21

MCP795B11

MCP795B22

MCP795B12

Blank

- Software block write-protect (¼, ½, or entire

array)

Blank

™

- Write Page mode (up to 8 bytes)

- Endurance: 1M erase/write cycles

EUI-48

EUI-64

Blank

• 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

Yes

Blank

™

EUI-48

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 1^st, 4^th,16^thor 32^ndevent

- 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

Vcc

CLKOUT/BOOT

EVHS

• Power-Fail Time-Stamp @ Battery Switchover:

- Logs time when VCC fails and VCC is restored

BAT

WDO

IRQ

EVLS

SCK

Low-Power Features:

• Wide Operating Voltage:

- VCC: 1.8V to 5.5V

VSS

- 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

12 3 4 5 6 7...54

中文翻译

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与MCP795W21相关器件

型号	品牌	获取价格	描述	数据表
MCP795W22	MICROCHIP	获取价格	3V SPI Real-Time Clock Calendar with Enhanced Features and Battery Switchover
MCP795W22	MAS	获取价格	SPI Real-Time Clock Calendar
MCP795W2X	MICROCHIP	获取价格	3V SPI Real-Time Clock Calendar with Enhanced Features and Battery Switchover
MCP795WXX	MAS	获取价格	SPI Real-Time Clock Calendar
MCP8021	MICROCHIP	获取价格	The MCP8021 device is a 3-phase Brushless DC (BLDC) power module containing three integrat
MCP8022	MICROCHIP	获取价格	The MCP8022 device is a 3-phase Brushless DC (BLDC) power module containing three integrat
MCP8025	MICROCHIP	获取价格	3-Phase Brushless DC (BLDC) Motor Gate Driver with Power Module, Sleep Mode, and LIN Trans
MCP8025-115E/MP	MICROCHIP	获取价格	BRUSHLESS DC MOTOR CONTROLLER
MCP8025-115E/PT	MICROCHIP	获取价格	3-Phase Brushless DC (BLDC) Motor Gate Driver with Power Module, Sleep Mode, and LIN Trans
MCP8025-115H/MP	MICROCHIP	获取价格	3-Phase Brushless DC (BLDC) Motor Gate Driver with Power Module, Sleep Mode, and LIN Trans

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