MC9S12DT256MPVE Freescale Semiconductor, MC9S12DT256MPVE Datasheet - Page 1086

• 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

Chapter 26 4 Kbyte EEPROM Module (S12XEETX4KV2)
1088
TRY TO DECREASE Tbus
Figure 26-17. Determination Procedure for PRDIV8 and EDIV Bits
EDIV[5:0]=PRDCLK[MHz]*(5+Tbus[ s])–1
EECLK = (PRDCLK)/(1+EDIV[5:0])
ALL COMMANDS IMPOSSIBLE
yes
1/EECLK[MHz] + Tbus[ms] > 5
PRDCLK = oscillator_clock/8
PRDCLK[MHz]*(5+Tbus[ s])
MC9S12XDP512 Data Sheet, Rev. 2.21
EECLK > 0.15 MHz
PRDIV8 = 0 (reset)
oscillator_clock
EDIV[5:0] > 4?
Tbus < 1 s?
>12.8 MHz?
PRDIV8 = 1
an integer?
START
AND
?
yes
yes
yes
no
no
no
no
PRDCLK = oscillator_clock
no
EDIV[5:0]=INT(PRDCLK[MHz]*(5+Tbus[ s]))
yes
ALL COMMANDS IMPOSSIBLE
END
Freescale Semiconductor