MC68HC908LJ24CPK Freescale Semiconductor, MC68HC908LJ24CPK Datasheet - Page 227
MC68HC908LJ24CPK
Manufacturer Part Number
MC68HC908LJ24CPK
Description
IC MCU 24K FLASH 8MHZ SPI 80LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908LK24CFUE.pdf
(464 pages)
Specifications of MC68HC908LJ24CPK
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, IRSCI, SPI
Peripherals
LCD, LVD, POR, PWM
Number Of I /o
48
Program Memory Size
24KB (24K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
80-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC908LJ24CPK
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC68HC908LJ24CPK
Manufacturer:
FRE/MOT
Quantity:
20 000
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12.8 RTC Register and Bit Write Protection
MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
A write-protect mechanism is implemented to prevent accidental writes
to the RTC clock registers, calendar registers, and other control bits. The
protected RTC registers and bits are listed in
(CGMXCLK
UNCOMPENSATED
COMPENSATED
1-Hz CLOCK
1-Hz CLOCK
CGMXCLK
Table 12-3. Write-Protected RTC Registers and Bits
÷
32768)
RTC Control Register 1
RTC Control Register 2
Day-Of-Week Register
Real Time Clock (RTC)
Figure 12-4. 1-Hz Clock Compensation
Second Register
Minute Register
Month Register
Hour Register
Year Register
Day Register
Register
1-Hz CLOCK = CGMXCLK
PERIOD A
TRUE 15 SECONDS
÷
A
RTC Register and Bit Write Protection
1-Hz CLOCK = CGMXCLK
OUTF[1:0]
AUTOCAL
Table
PERIOD B
COMEN
(All Bits)
(All Bits)
(All Bits)
(All Bits)
(All Bits)
(All Bits)
(All Bits)
RTCE
CAL
Bit
Real Time Clock (RTC)
12-3.
÷
B
Data Sheet
227
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