MC68HC908LJ12CPB FREESCALE [Freescale Semiconductor, Inc], MC68HC908LJ12CPB Datasheet - Page 212

• Manufacturer Part Number: MC68HC908LJ12CPB
• Description: 8-bit microcontroller units
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

MC68HC908LJ12
Freescale Semiconductor
CGMXCLK
VALID CGMXCLK
FREQUENCIES:
32.768 kHz
32.000 kHz
38.400 kHz
64.000 kHz
76.800 kHz
CHRONOGRAPH DATA REGISTER
÷ 64
—
Rev. 2.1
ALARM MINUTE REGISTER
ALARM HOUR REGISTER
÷ 4
÷ 5
÷ 6
COMPARATOR
COMPARATOR
×
Figure 12-2. RTC Block Diagram
× 1
÷ 2
÷ 2
25
32
÷ 256
÷ 320
÷ 384
÷ 640
÷ 768
Real Time Clock (RTC)
000
010
011
100/110
101/111
RTCE
XTL[2:0]
DAY-OF-WEEK COUNTER REGISTER
X
CHRE
SECOND COUNTER REGISTER
MINUTE COUNTER REGISTER
MONTH COUNTER REGISTER
HOUR COUNTER REGISTER
YEAR COUNTER REGISTER
CHRONOGRAPH COUNTER
DAY COUNTER REGISTER
100 Hz / 128 Hz
CHRCLR
÷ 32
÷ 25
1 Hz
A
B
SL
X
XTL[2:0] = 000 => X = A
XTL[2:0] = 000 => X = B
÷ 2
2 Hz
4 Hz
SECIE
ALMIE
DAYIE
SECF
MINIE
ALMF
DAYF
MINF
HRIE
HRF
Real Time Clock (RTC)
CHRIE
÷ 2
TB1IE
TB2IE
CHRF
TB1F
TB2F
Technical Data
INTERRUPT
LOGIC
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