MC9S12XD256VAG Freescale Semiconductor, MC9S12XD256VAG Datasheet - Page 1051

• Manufacturer Part Number: MC9S12XD256VAG
• Description: IC MCU 256K FLASH 144-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12XD256VAG

• Core Processor: HCS12X
• Core Size: 16-Bit
• Speed: 80MHz
• Connectivity: CAN, EBI/EMI, I²C, IrDA, LIN, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 119
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 14K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 5.5 V
• Data Converters: A/D 24x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Freescale Semiconductor
TRY TO DECREASE Tbus
Figure 25-17. 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
Chapter 25 2 Kbyte EEPROM Module (S12XEETX2KV1)
ALL COMMANDS IMPOSSIBLE
END
1053