Example of an automotive system. The VSYS and LINE inputs " />
參數(shù)資料
型號: CDP68HC68T1M
廠商: Intersil
文件頁數(shù): 13/23頁
文件大小: 0K
描述: IC RTC 32X8 NVSRAM CMOS 20-SOIC
標(biāo)準(zhǔn)包裝: 380
類型: 時鐘/日歷
特點(diǎn): 警報器,閏年,方波輸出,監(jiān)視計時器
存儲容量: 32B
時間格式: HH:MM:SS(12/24 小時)
數(shù)據(jù)格式: YY-MM-DD-dd
接口: SPI
電源電壓: 3 V ~ 6 V
電壓 - 電源,電池: 2.2 V ~ 6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 20-SOIC W
包裝: 管件
20
FN1547.8
October 29, 2007
Example of an automotive system. The VSYS and LINE inputs can be used to sense the ignition turning on and off. An
external switch is included to activate the system without turning on the ignition. Also, the CMOS CPU is not powered down
with the system VDD, but is held in a low power reset mode during power down. When restoring power the CDP68HC68T1
will enable the CLK OUT pin and set the PSE and CPUR high.
Important Application Note: Those units with a code of 6PG have delayed alarm interrupts of 8.3ms regardless of
CDP68HC68T1’s operating frequency. (See "Functional Description", INT on page 10.) In addition, reading the Status
Register before delayed alarm activates will disable alarm signal.
FIGURE 19. AUTOMOTIVE SYSTEM DIAGRAM
System Diagrams (Continued)
XTAL
LINE
VDD
VSYS
VBATT
POR
2MHz
PSE
CPUR
CLK OUT
SPI
CE
INT
T1
VSS
VDD
RESET
OSC1
IRQ
SPI
PORT
CDP68HC05C4B
VSS
PORT
5V
REG
+
-
12V
IGNITION
3
CLOCK BUTTON
ENABLED POWER
CDP68HC68T1
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