MC9S08DV32MLF Freescale Semiconductor, MC9S08DV32MLF Datasheet - Page 313
![IC MCU 32K FLASH 2K RAM 48-LQFP](/photos/12/35/123536/mc9s08dv48amlf_sml.jpg)
MC9S08DV32MLF
Manufacturer Part Number
MC9S08DV32MLF
Description
IC MCU 32K FLASH 2K RAM 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HCS08r
Specifications of MC9S08DV32MLF
Core Processor
HCS08
Core Size
8-Bit
Speed
40MHz
Connectivity
CAN, I²C, LIN, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
39
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 16x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC9S08DV32MLF
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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RTCPS and the RTCLKS[0] bit select the desired divide-by value. If a different value is written to RTCPS,
the prescaler and RTCCNT counters are reset to 0x00.
The RTC modulo register (RTCMOD) allows the compare value to be set to any value from 0x00 to 0xFF.
When the counter is active, the counter increments at the selected rate until the count matches the modulo
value. When these values match, the counter resets to 0x00 and continues counting. The real-time interrupt
flag (RTIF) is set when a match occurs. The flag sets on the transition from the modulo value to 0x00.
Writing to RTCMOD resets the prescaler and the RTCCNT counters to 0x00.
The RTC allows for an interrupt to be generated when RTIF is set. To enable the real-time interrupt, set
the real-time interrupt enable bit (RTIE) in RTCSC. RTIF is cleared by writing a 1 to RTIF.
15.4.1
This section shows an example of the RTC operation as the counter reaches a matching value from the
modulo register.
Freescale Semiconductor
RTCPS
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
RTC Operation Example
1-kHz Internal Clock
(RTCLKS = 00)
256 ms
512 ms
1.024 s
128 ms
32 ms
64 ms
10 ms
16 ms
8 ms
1 ms
2 ms
4 ms
0.1 s
0.5 s
Off
1 s
MC9S08DV60 Series Data Sheet, Rev 3
1-MHz External Clock
Table 15-6. Prescaler Period
(RTCLKS = 01)
1.024 ms
2.048 ms
4.096 ms
8.192 ms
16.4 ms
32.8 ms
65.5 ms
10 ms
20 ms
50 ms
1 ms
2 ms
5 ms
0.1 s
0.2 s
Off
Table 15-6
32-kHz Internal Clock
(RTCLKS = 10)
15.625 ms
3.125 ms
31.25 ms
31.25 μs
312.5 μs
62.5 μs
250 μs
125 μs
0.5 ms
16 ms
32 ms
1 ms
2 ms
4 ms
8 ms
shows different prescaler period values.
Off
Chapter 15 Real-Time Counter (S08RTCV1)
32-kHz Internal Clock
(RTCLKS = 11)
156.25 ms
31.25 ms
312.5 ms
1.5625 s
62.5 ms
0.625 s
3.125 s
128 ms
256 ms
512 ms
1.024 s
2.048 s
32 ms
64 ms
6.25 s
Off
313
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