參數(shù)資料
型號: BQ4285EP
廠商: Texas Instruments
文件頁數(shù): 3/31頁
文件大?。?/td> 0K
描述: IC RTC W/114X8 NVSRAM 24-DIP
產(chǎn)品培訓(xùn)模塊: Clock Basics in 10 minutes or less
標(biāo)準(zhǔn)包裝: 15
類型: 時鐘/日歷
特點: 警報器,夏令時,閏年,NVSRAM,方波輸出
存儲容量: 114B
時間格式: HH:MM:SS(12/24 小時)
數(shù)據(jù)格式: YY-MM-DD-dd
接口: 并聯(lián)
電源電壓: 4.5 V ~ 5.5 V
電壓 - 電源,電池: 2.5 V ~ 4 V
工作溫度: 0°C ~ 70°C
安裝類型: 通孔
封裝/外殼: 24-DIP(0.600",15.24mm)
供應(yīng)商設(shè)備封裝: 24-PDIP
包裝: 管件
產(chǎn)品目錄頁面: 1076 (CN2011-ZH PDF)
其它名稱: 296-6525-5
Register C
Register C is the read-only event status register.
Bits 0–3 - Unused Bits
These bits are always set to 0.
32KE–32KHz Enable Output
This bit may be set to a 1 only when the OSC2–OSC0
bits in register A are set to 011. Setting OSC2–OSC0 to
anything other than 011 clears this bit. If SQWE in reg-
ister B and 32KE are set, a 32.768KHz waveform is out-
put on the square wave pin.
UF - Update-Event Flag
This bit is set toa1attheendofthe update cycle.
Reading register C clears this bit.
AF - Alarm Event Flag
This bit is set to a 1 when an alarm event occurs. Read-
ing register C clears this bit.
PF - Periodic Event Flag
This bit is set to a 1 every tPI time, where tPI is the time
period selected by the settings of RS0–RS3 in register A.
Reading register C clears this bit.
INTF - Interrupt Request Flag
This flag is set to a 1 when any of the following is true:
AIE = 1 and AF = 1
PIE = 1 and PF = 1
UIE = 1 and UF = 1
Reading register C clears this bit.
Register D
Register D is the read-only data integrity status register.
Bits 0–6 - Unused Bits
These bits are always set to 0.
VRT - Valid RAM and Time
1 = Valid backup energy source
0 = Backup energy source is depleted
When the backup energy source is depleted (VRT = 0),
data integrity of the RTC and storage registers is not
guaranteed.
11
7654
3
210
---
UF
-
---
7654
3
210
--
AF
-
---
7654
3
210
-PF-
-
7654
3
210
INTF
-
Register D Bits
7654
3
210
VRT
000
0
000
7654
3
210
-
000
0
000
7654
3
210
VRT
---
-
---
Register C Bits
7654
3
210
INTF
PF
AF
UF
0
32KE
0
7654
3
210
----
0
-
0
7654
3
210
----
-
32KE
-
bq4285E/L
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