CDP68HC68T1M296 Intersil, CDP68HC68T1M296 Datasheet - Page 20
![IC RTC RAM/SPI SERIAL 16-SOIC](/photos/5/65/56533/20-16-soic_sml.jpg)
CDP68HC68T1M296
Manufacturer Part Number
CDP68HC68T1M296
Description
IC RTC RAM/SPI SERIAL 16-SOIC
Manufacturer
Intersil
Type
Clock/Calendar/NVSRAMr
Datasheet
1.CDP68HC68T1EZ.pdf
(23 pages)
Specifications of CDP68HC68T1M296
Memory Size
32B
Time Format
HH:MM:SS (12/24 hr)
Date Format
YY-MM-DD-dd
Interface
SPI, 3-Wire Serial
Voltage - Supply
3 V ~ 6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.300", 7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
System Diagrams
Example of an automotive system. The V
external switch is included to activate the system without turning on the ignition. Also, the CMOS CPU is not powered down
with the system V
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.
12V
-
+
CLOCK BUTTON
REG
5V
DD
, but is held in a low power reset mode during power down. When restoring power the CDP68HC68T1
IGNITION
20
(Continued)
LINE
V
POR
XTAL
2MHz
BATT
V
V
T1
DD
SS
FIGURE 19. AUTOMOTIVE SYSTEM DIAGRAM
SYS
CLK OUT
CPUR
V
and LINE inputs can be used to sense the ignition turning on and off. An
PSE
SYS
INT
SPI
CE
CDP68HC68T1
3
ENABLED POWER
RESET
OSC1
IRQ
SPI
PORT
CDP68HC05C4B
V
V
DD
SS
PORT
October 29, 2007
FN1547.8