MC9S12DT256MPVE Freescale Semiconductor, MC9S12DT256MPVE Datasheet - Page 563

• Manufacturer Part Number: MC9S12DT256MPVE
• Description: IC MCU 256K FLASH 25MHZ 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12DT256MPVE

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: CAN, I²C, SCI, SPI
• Peripherals: PWM, WDT
• Number Of I /o: 91
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 12K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 5.25 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 112-LQFP
• Processor Series: S12D
• Core: HCS12
• Data Bus Width: 16 bit
• Data Ram Size: 12 KB
• Interface Type: CAN/I2C/SCI/SPI
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 91
• Number Of Timers: 1
• Operating Supply Voltage: 5 V to 2.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Development Tools By Supplier: M68KIT912DP256
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 2 (8-ch x 10-bit)
• No. Of I/o's: 91
• Eeprom Memory Size: 4KB
• Ram Memory Size: 12KB
• Cpu Speed: 25MHz
• No. Of Timers: 1
• No. Of Pwm Channels: 8
• Digital Ic Case Style: LQFP
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

You can calculate the selected period depending of APICLK as:
Freescale Semiconductor
Period = 2*(APIR[11:0] + 1) * 0.1 ms or period = 2*(APIR[11:0] + 1) * bus clock period
1
When trimmed within specified accuracy. See electrical specifications for details.
APICLK
Table 14-8. Selectable Autonomous Periodical Interrupt Periods
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
MC9S12XDP512 Data Sheet, Rev. 2.21
APIR[11:0]
FFD
FFE
FFD
FFE
FFF
FFF
000
001
002
003
004
005
000
001
002
003
004
005
.....
.....
8188 * bus clock period
8190 * bus clock period
8192 * bus clock period
10 * bus clock period
12 * bus clock period
2 * bus clock period
4 * bus clock period
6 * bus clock period
8 * bus clock period
Selected Period
818.8 ms
819.2 ms
819 ms
0.2 ms
0.4 ms
0.6 ms
0.8 ms
1.0 ms
1.2 ms
Chapter 14 Voltage Regulator (S12VREG3V3V5)
.....
.....
1
1
1
1
1
1
1
1
1
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