MC68HC908LK24CFQ Freescale Semiconductor, MC68HC908LK24CFQ Datasheet - Page 224
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MC68HC908LK24CFQ
Manufacturer Part Number
MC68HC908LK24CFQ
Description
IC MCU 24K FLASH 8MHZ SPI 80-QFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908LK24CFUE.pdf
(464 pages)
Specifications of MC68HC908LK24CFQ
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, IRSCI, SPI
Peripherals
LCD, LVD, POR, PWM
Number Of I /o
40
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-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC908LK24CFQ
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC68HC908LK24CFQ
Manufacturer:
FRE/MOT
Quantity:
20 000
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Real Time Clock (RTC)
12.5.5 Timebase Interrupts
12.6 RTC Interrupts
Data Sheet
224
The value in the chronograph data register satisfies the following
equation:
The accuracy of the chronograph counter is ±5ms (max).
In addition to the second, minute, hour, and day periodic interrupts
generated by the clock functions, the divider circuits generates four
periodic clocks, separated into two groups: 2Hz and 4Hz; 8Hz and
16Hz. The TBH bit in the RTC control register 2 (RTCCR2) selects the
group for the timebase interrupts, indicated by TB1F and TB2F flags. A
CPU interrupt request is generated if the corresponding enable bits
(TB1IE and TB2IE) are also set.
The RTC has one alarm interrupt and seven periodic interrupts:
A CPU interrupt request is generated if the corresponding interrupt
enable bits are also set.
•
•
Alarm interrupt
Periodic interrupts:
– Second
– Minute
– Hour
– Day
– 1/128 seconds (chronograph)
– Timebase 1 and 2:
1/2 seconds and 1/4 seconds, or
1/8 seconds and 1/16 seconds
(128Hz counter value 25)
------------------------------------------------------------------------------------- -
Real Time Clock (RTC)
32
×
+
MC68HC908LJ24/LK24 — Rev. 2.1
16
Freescale Semiconductor
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