MC9S12XET256MAA Freescale Semiconductor, MC9S12XET256MAA Datasheet - Page 585

• Manufacturer Part Number: MC9S12XET256MAA
• Description: MCU 16BIT 256K FLASH 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12XET256MAA

• Core Processor: HCS12X
• Core Size: 16-Bit
• Speed: 50MHz
• Connectivity: CAN, EBI/EMI, I²C, IrDA, SCI, SPI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 59
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.72 V ~ 5.5 V
• Data Converters: A/D 12x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 80-QFP
• Processor Series: S12XE
• Core: HCS12
• Data Bus Width: 16 bit
• Data Ram Size: 16 KB
• Interface Type: CAN, SCI, SPI
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 59
• Number Of Timers: 25
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Development Tools By Supplier: KIT33812ECUEVME, EVB9S12XEP100, DEMO9S12XEP100
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 8 Channel
• Package: 80PQFP
• Family Name: HCS12X
• Maximum Speed: 50 MHz
• Operating Supply Voltage: 1.8|2.8|5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The number of clocks from the falling edge of SCL to the first tap (Tap[1]) is defined by the values shown
in the scl2tap column of
tap2tap column in
to determine the delay from the falling edge of SCL to SDA changing, the SDA hold time.
IBC7–6 defines the multiplier factor MUL. The values of MUL are shown in the
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SDA
SCL
Table
IBC5-3
(bin)
000
001
010
011
100
101
110
111
15-4. The SCL Tap is used to generated the SCL period and the SDA Tap is used
Table
15-4, all subsequent tap points are separated by 2
MC9S12XE-Family Reference Manual Rev. 1.23
scl2start
Table 15-5. Prescale Divider Encoding
(clocks)
126
14
30
62
2
2
2
6
Table 15-6. Multiplier Factor
IBC7-6
00
01
10
11
scl2stop
(clocks)
SCL Divider
129
17
33
65
7
7
9
9
RESERVED
Chapter 15 Inter-Integrated Circuit (IICV3) Block Description
MUL
01
02
04
(clocks)
scl2tap
126
14
30
62
4
4
6
6
SDA Hold
(clocks)
tap2tap
IBC5-3
128
Table
16
32
64
1
2
4
8
as shown in the
15-6.
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