MC9S12XD256VAG Freescale Semiconductor, MC9S12XD256VAG Datasheet - Page 561

• 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

14.3.2.4
The VREGAPITR register allows to trim the API timeout period.
Freescale Semiconductor
APITR[5:0]
1. Reset value is either 0 or preset by factory. See Device User Guide for details.
Reset
Field
7–2
W
R
APITR5
Autonomous Periodical Interrupt Period Trimming Bits — See
Autonomous Periodical Interrupt Trimming Register (VREGAPITR)
0
Figure 14-5. Autonomous Periodical Interrupt Trimming Register (VREGAPITR)
7
1
= Unimplemented or Reserved
APITR4
APITR[5]
APITR[4]
APITR[3]
APITR[2]
APITR[1]
APITR[0]
0
6
1
Bit
Table 14-5. VREGAPITR Field Descriptions
Table 14-6. Trimming Effect of APIT
Increases period
Decreases period less than APITR[5] increased it
Decreases period less than APITR[4]
Decreases period less than APITR[3]
Decreases period less than APITR[2]
Decreases period less than APITR[1]
APITR3
MC9S12XDP512 Data Sheet, Rev. 2.21
0
5
1
APITR2
0
4
1
Trimming Effect
Description
APITR1
0
3
1
Chapter 14 Voltage Regulator (S12VREG3V3V5)
Table 14-6
APITR0
0
2
1
for trimming effects.
0
0
1
0
0
0
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