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参数资料
| 型号： | FM31L274-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： | 5/26页 |
| 文件大小： | 716K |
| 代理商： | FM31L274-GTR |
FM31L278/L276/L274/L272 - 3V I2C Companion
Rev. 2.0
Jan. 2011
Page 13 of 26
0Ch
Event Counter Control
D7
D6
D5
D4
D3
D2
D1
D0
-
RC
CC
C2P
C1P
RC
Read Counter. Setting this bit to 1 takes a snapshot of the four counters bytes allowing the system to read the
values without missing count events. The RC bit will be automatically cleared.
CC
Counter Cascade. When CC=0, the event counters operate independently according to the edge programmed by
C1P and C2P respectively. When CC=1, the counters are cascaded to create one 32-bit counter. The registers of
Counter 2 represent the most significant 16-bits of the counter and CNT1 is the controlling input. Bit C2P is
“don’t care” when CC=1. Battery-backed, read/write.
C2P
CNT2 detects falling edges when C2P = 0, rising edges when C2P = 1. C2P is “don’t care” when CC=1. The value
of Event Counter 2 may inadvertently increment if C2P is changed. Battery-backed, read/write.
C1P
CNT1 detects falling edges when C1P = 0, rising edges when C1P = 1. The value of Event Counter 1 may
inadvertently increment if C1P is changed. Battery-backed, read/write.
0Bh
Companion Control
D7
D6
D5
D4
D3
D2
D1
D0
SNL
-
FC
WP1
WP0
VBC
-
VTP
SNL
Serial Number Lock. Setting to a 1 makes registers 11h to 18h and SNL permanently read-only. SNL cannot be
cleared once set to 1. Nonvolatile, read/write.
FC
Fast Charge: Setting FC to ‘1’ (and VBC=1) causes a ~1 mA trickle charge current to be supplied on VBAK.
Clearing VBC to ‘0’ disables the charge current. Nonvolatile, read/write.
WP1-0
Write Protect. These bits control the write protection of the memory array. Nonvolatile, read/write.
Write protect addresses
WP1
WP0
None
0
Bottom 1/4
0
1
Bottom 1/2
1
0
Full array
1
VBC
VBAK Charger Control. Setting VBC to ‘1’ (and FC=0) causes a ~80 A (1 mA if FC=1) trickle charge current to
be supplied on VBAK. Clearing VBC to ‘0’ disables the charge current. Nonvolatile, read/write.
VTP
VTP select. This bit controls the reset trip point for the low VDD reset function. Nonvolatile, read/write.
Trip Voltage
VTP
2.6V
0
2.9V
1
0Ah
Watchdog Control
D7
D6
D5
D4
D3
D2
D1
D0
WDE
-
WDT4
WDT3
WDT2
WDT1
WDT0
WDE
Watchdog Enable. When WDE=1, a watchdog timer fault will cause the /RST signal to go active. When WDE = 0
the timer runs but has no effect on /RST, however the WTR flag will be set when a fault occurs. Note as the timer
is free-running, users should restart the timer using WR3-0 prior to setting WDE=1. This assures a full watchdog
timeout interval occurs. Nonvolatile, read/write.
WDT4-0
Watchdog Timeout. Indicates the minimum watchdog timeout interval with 100 ms resolution. New watchdog
timeouts are loaded when the timer is restarted by writing the 1010b pattern to WR3-0. Nonvolatile, read/write.
Watchdog timeout
WDT4 WDT3 WDT2 WDT1 WDT0
Invalid – default 100 ms
0
100 ms
0
1
200 ms
0
1
0
300 ms
0
1
.
2000 ms
1
0
1
0
2100 ms
1
0
1
0
1
2200 ms
1
0
1
0
.
2900 ms
1
0
1
3000 ms
1
0
Disable counter
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FM31L276 | 制造商:RAMTRON 制造商全称:RAMTRON 功能描述:3V Integrated Processor Companion with Memory |
| FM31L276-G | 功能描述:监控电路 64K 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 |
| FM31L276-GTR | 功能描述:监控电路 64K 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 | 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 |
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