MC908LJ12CFBE Freescale Semiconductor, MC908LJ12CFBE Datasheet - Page 219

• Manufacturer Part Number: MC908LJ12CFBE
• Description: IC MCU 12K FLASH 8MHZ 52-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908LJ12CFBE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: IRSCI, SPI
• Peripherals: LCD, LVD, POR, PWM
• Number Of I /o: 20
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-LQFP
• Processor Series: HC08LJ
• Core: HC08
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SCI/SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 4
• Operating Supply Voltage: 3.3 V, 5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: FSICEBASE, M68EML08LJLKE, ZK-HC08LX-A, M68CBL05CE
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 6-ch x 10-bit
• Controller Family/series: HC08
• No. Of I/o's: 20
• Ram Memory Size: 512Byte
• Cpu Speed: 8MHz
• No. Of Timers: 2
• Embedded Interface Type: SCI, SPI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

12.6.3 RTC Status Register (RTCSR)
MC68HC908LJ12
Freescale Semiconductor
—
Rev. 2.1
Address:
XTL[2:0] — Crystal Frequency Select Bits
The RTC status register contains eight status flags. When a flag is set
and the corresponding interrupt enable bit is also set, a CPU interrupt
request is generated.
Notes:
Reset:
1. Using crystal frequencies other than these specified will cause incorrect timings in the RTC
Read:
Write:
These three bits set the prescalers/dividers for proper operation of the
RTC module for various crystal (CGMXCLK) input frequencies. The
XTL[2:0] bits can only be written once after reset, subsequent writes
to these bits will have no effect on its content.
XTL[2:0] settings for various CGMXCLK frequencies. Reset clear the
XTL[2:0] bits.
module.
Table 12-1. CGMXCLK Frequency for RTC Input Reference
$0044
ALMF
CGMXCLK
0
32.768 kHz
32.000 kHz
38.400 kHz
64.000 kHz
76.800 kHz
Reserved
Figure 12-5. RTC Status Register (RTCSR)
Real Time Clock (RTC)
= Unimplemented
CHRF
0
(1)
DAYF
0
HRF
0
XTL2
0
0
0
0
1
1
MINF
0
XTL1
Table 12-1
SECF
X
X
0
0
1
1
0
Real Time Clock (RTC)
TB1F
0
Technical Data
shows the
XTL0
0
1
0
1
0
1
TB2F
0
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