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参数资料
| 型号： | FM31L276-GTR |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO14 |
| 封装： | GREEN, MS-012AB, SOIC-14 |
| 文件页数： | 3/26页 |
| 文件大小： | 716K |
| 代理商： | FM31L276-GTR |
FM31L278/L276/L274/L272 - 3V I2C Companion
Rev. 2.0
Jan. 2011
Page 11 of 26
Register Map
The RTC and processor companion functions are accessed via 25 special function registers mapped to a separate 2-
wire device ID. The interface protocol is described below. The registers contain timekeeping data, control bits, or
information flags. A description of each register follows the summary table below.
Register Map Summary Table
Nonvolatile =
Battery-backed =
Address
D7
D6
D5
D4
D3
D2
D1
D0
Function
Range
Serial Number Byte 7
Serial Number 7
FFh
Serial Number Byte 6
Serial Number 6
FFh
Serial Number Byte 5
Serial Number 5
FFh
Serial Number Byte 4
Serial Number 4
FFh
Serial Number Byte 3
Serial Number 3
FFh
Serial Number Byte 2
Serial Number 2
FFh
Serial Number Byte 1
Serial Number 1
FFh
Serial Number Byte 0
Serial Number 0
FFh
10h
Counter 2 MSB
Event Counter 2 MSB
FFh
0Fh
Counter 2 LSB
Event Counter 2 LSB
FFh
0Eh
Counter 1 MSB
Event Counter 1 MSB
FFh
0Dh
Counter 1 LSB
Event Counter 1 LSB
FFh
0Ch
RC
CC
C2P
C1P
Event Count Control
0Bh
SNL
-
FC
WP1
WP0
VBC
-
VTP
Companion Control
0Ah
WDE
-
WDT4
WDT3
WDT2
WDT1
WDT0
Watchdog Control
09h
WTR
POR
LB
-
WR3
WR2
WR1
WR0
Watchdog Restart/Flags
08h
10 years
years
Years
00-99
07h
0
10 mo
months
Month
1-12
06h
00
10 date
date
Date
1-31
05h
0
000
0
day
Day
1-7
04h
00
10 hours
hours
Hours
0-23
03h
0
10 minutes
minutes
Minutes
0-59
02h
0
10 seconds
seconds
Seconds
0-59
01h
/OSCEN
reserved
CALS
CAL4
CAL3
CAL2
CAL1
CAL0
CAL/Control
00h
reserved
CF
reserved
CAL
W
R
RTC Control
18h
17h
11h
16h
15h
14h
13h
12h
Note: When the device is first powered up and programmed, all registers must be written because the battery-
backed register values cannot be guaranteed. The table below shows the default values of the non-volatile
registers. All other register values should be treated as unknown.
Default Register Values
Address
Hex Value
18h
0x00
17h
0x00
16h
0x00
15h
0x00
14h
0x00
13h
0x00
12h
0x00
11h
0x00
0Bh
0x00
0Ah
0x1F
01h
0x80
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相关代理商/技术参数 |
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|---|---|
| FM31L278 | 制造商:RAMTRON 制造商全称:RAMTRON 功能描述:3V Integrated Processor Companion with Memory |
| FM31L278_11 | 制造商:RAMTRON 制造商全称:RAMTRON 功能描述:3V Integrated Processor Companion with Memory |
| FM31L278G | 制造商:Cypress Semiconductor 功能描述: |
| FM31L278-G | 功能描述:监控电路 256K w/RTC Pwr Mon WDT Bat Sw PF RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| FM31L278-GTR | 功能描述:监控电路 256K w/RTC Pwr Mon WDT Bat Sw PF RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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