CDP68HC68T1M Intersil, CDP68HC68T1M Datasheet - Page 19

• Manufacturer Part Number: CDP68HC68T1M
• Description: IC RTC 32X8 NVSRAM CMOS 20-SOIC
• Manufacturer: Intersil
• Type: Clock/Calendar/NVSRAMr

Specifications of CDP68HC68T1M

• 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: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

System Diagrams
0.047
20k
LINE
1k
AC
V
DD
RTC
CHARGE
REGULATOR
19
(Continued)
R
FIGURE 18. EXAMPLE OF A SYSTEM WITH A BATTERY BACKUP
0.1
POR
V
XTAL
LINE
BATT
100k
V
V
DD
SS
CDP68HC68T1
CPUR
V
CLK
OUT
PSE
SYS
INT
SPI
CE
NC
V
DD
3
RESET
IRQ
OSC1
PORT
SPI
CDP68HC05C4B
V
V
DD
SS
(EPS)
ENABLED
POWER
SUPPLY
October 29, 2007
FN1547.8