參數資料
| 型號： | ISL12032IVZ |
| 廠商： | Intersil |
| 文件頁數： | 10/26頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC LP BATT BACK SRAM 14TSSOP |
| 產品培訓模塊： | Solutions for Industrial Control Applications |
| 標準包裝： | 960 |
| 類型： | 時間事件記錄器 |
| 特點： | 警報器，SRAM，涓流充電器 |
| 存儲容量： | 128B |
| 時間格式： | HH:MM:SS:hh（12/24 小時） |
| 數據格式： | YY-MM-DD-dd |
| 接口： | I²C，2 線串口 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 電壓 - 電源，電池： | 1.8 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 14-TSSOP |
| 包裝： | 管件 |
18
FN6618.3
May 5, 2011
BATTERY LEVEL MONITOR TRIP BITS (VB75TP <2:0>)
Three bits selects the second warning (75% of Nominal VBAT)
level for the battery voltage monitor. There are total of 7 levels
that could be selected for the second monitor. Any of the levels
could be selected as the second alarm with no reference as to
nominal VBAT voltage level. See Table 19 for typical values.
AC Register (AC)
This register sets the performance screening for the AC
input.
AC 50/60HZ INPUT SELECT (AC5060)
This bit selects either 50Hz or 60Hz powerline AC clock
input frequency. Setting this bit to “0” selects a 60Hz input
(default). Setting this bit to “1” selects a 50Hz input.
AC ENABLE (ACENB)
This bit will enable/disable the AC clock input. Setting this bit
to “0” will enable the AC clock input (default). Setting this bit
to “1” will disable the AC clock input. When the AC input is
disabled, the crystal oscillator becomes the sole source for
RTC and FOUT clocking.
AC RECOVERY PERIOD (ACRP<1:0>)
This bit sets the AC clock input validation recovery period.
After the AC input fails validation (ACFAIL = 1), a predefined
period is used to test the frequency and voltage of the AC
clock input. The range is from 2s to 16s.
AC FAILURE CYCLES (ACFP<1:0>)
These two bits determine how many AC cycles are used for
the AC clock qualification, or to disable the AC clock
qualification. The range is from 1 AC cycle to 12 AC cycles
or disable, and is also dependent on the AC5060 bit setting
(see Table 22). The qualification logic will count the number
of crystal cycles in the chosen AC period, and if the count is
outside the window set by ACFC bits then the ACFAIL signal
is set to “1”.
For example, if 10 cycles are chosen for 50Hz input, then
during those 10 cycles there would need to be exactly 6554
crystal cycles. That number is subtracted from the actual
count during the 10 AC cycles and the absolute value is
compared to the error value set by ACFC. If the error were
10 crystal cycles and ACFC were set to 11b, then the
allowable error would be 20 crystal cycles and the ACFAIL
would be “0”, or qualification has passed. If the actual error
count were 22 cycles then the ACFAIL would be set to “1”,
qualification has failed.
.
AC/CRYSTAL FREQUENCY FAILURE CRITERION
(ACFC<1:0>)
These two bits determine the number of crystal cycles used
for the error budget for the AC qualification (see Table 24).
Two of the choices are for a fixed ppm criterion of 1 or 2
crystal cycles in just one AC cycle (independent of the ACFP
setting). The other choices are for 1 or 2 crystal cycles per
AC cycle, but includes the total number of cycles set by the
ACFP.
Using the example given for the ACFP bits previously
mentioned:
AC5060 = 1 (50Hz)
ACFC = 11b (2 crystal cycles/AC cycle)
TABLE 18. VB85T VBAT WARNING LEVELS
VB85Tp2
VB85Tp1
VB85Tp0
BATTERY
ALARM TRIP
LEVEL (V)
0
2.125
0
1
2.295
0
1
0
2.550
0
1
2.805
1
0
3.060
1
0
1
4.250
1
0
4.675
TABLE 19. VB75T VBAT WARNING LEVELS
VB75Tp2
VB75Tp1
VB75Tp0
BATTERY
ALARM TRIP
LEVEL (V)
0
1.875
0
1
2.025
0
1
0
2.250
0
1
2.475
1
0
2.700
1
0
1
3.750
1
0
4.125
TABLE 20. AC REGISTER
ADDR
7
6
5
4
3
2
1
0
13h
AC5060 ACENB ACRP1 ACRP0 ACFP1 ACFP0 ACFC1 ACFC0
TABLE 21. AC RECOVERY PERIOD
ACRP1
ACRP0
RECOVERY TIME
00
2s
01
4s
10
8s
1
16s
TABLE 22. AC FAILURE CYCLES
CYCLE USED for COUNT
ACFP1
ACFP0
AC5060 = 0
AC5060=1
(Disabled)
0
11
0
1
65
1
0
12
10
1
ISL12032
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