MC9S12E256VFUE Freescale Semiconductor, MC9S12E256VFUE Datasheet - Page 230

• Manufacturer Part Number: MC9S12E256VFUE
• Description: IC MCU 256K FLASH 25MHZ 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12E256VFUE

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, I²C, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 60
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 2.75 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 80-QFP
• Processor Series: S12E
• Core: HCS12
• Data Bus Width: 16 bit
• Data Ram Size: 16 KB
• Interface Type: I2C, SCI, SPI
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 60
• Number Of Timers: 12
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 16 Channel
• On-chip Dac: 8 bit, 2 Channel
• Package: 80PQFP
• Family Name: HCS12
• Maximum Speed: 50 MHz
• For Use With: M68EVB912E128 - BOARD EVAL FOR MC9S12E128/64
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Chapter 6 Analog-to-Digital Converter (ATD10B16CV4)
6.3.2.16
The A/D conversion results are stored in 16 read-only result registers. The result data is formatted in the
result registers bases on two criteria. First there is left and right justification; this selection is made using
the DJM control bit in ATDCTL5. Second there is signed and unsigned data; this selection is made using
the DSGN control bit in ATDCTL5. Signed data is stored in 2’s complement format and only exists in left
justified format. Signed data selected for right justified format is ignored.
Read: Anytime
Write: Anytime in special mode, unimplemented in normal modes
6.3.2.16.1
230
R (10-BIT)
R (10-BIT)
R (8-BIT)
R (8-BIT)
Reset
Reset
W
W
Figure 6-18. Left Justified, ATD Conversion Result Register x, High Byte (ATDDRxH)
Figure 6-19. Left Justified, ATD Conversion Result Register x, Low Byte (ATDDRxL)
BIT 9 MSB
BIT 7 MSB
ATD Conversion Result Registers (ATDDRx)
Left Justified Result Data
BIT 1
u
0
7
0
7
= Unimplemented or Reserved
= Unimplemented or Reserved
BIT 0
BIT 8
BIT 6
6
u
0
0
6
MC9S12E256 Data Sheet, Rev. 1.08
BIT 7
BIT 5
0
0
0
5
0
5
BIT 6
BIT 4
4
0
0
0
0
4
BIT 5
BIT 3
0
0
0
3
0
3
u = Unaffected
BIT 4
BIT 2
2
0
0
0
0
2
Freescale Semiconductor
BIT 3
BIT 1
0
0
0
1
0
1
BIT 2
BIT 0
0
0
0
0
0
0