MC9S12E128CPV Freescale Semiconductor, MC9S12E128CPV Datasheet - Page 395

• Manufacturer Part Number: MC9S12E128CPV
• Description: Microcontrollers (MCU) 16 Bit 16MHz
• Manufacturer: Freescale Semiconductor

Specifications of MC9S12E128CPV

• Data Bus Width: 16 bit
• Program Memory Type: Flash
• Program Memory Size: 128 KB
• Data Ram Size: 8 KB
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 92
• Number Of Timers: 16 bit
• Operating Supply Voltage: 3.135 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: LQFP-112
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit
• On-chip Dac: 8 bit, 2 Channel
• Lead Free Status / Rohs Status: No RoHS Version Available

12.3.2.9
PWMSCLA is the programmable scale value used in scaling clock A to generate clock SA. Clock SA is
generated by taking clock A, dividing it by the value in the PWMSCLA register and dividing that by two.
Any value written to this register will cause the scale counter to load the new scale value (PWMSCLA).
Read: anytime
Write: anytime (causes the scale counter to load the PWMSCLA value)
12.3.2.10 PWM Scale B Register (PWMSCLB)
PWMSCLB is the programmable scale value used in scaling clock B to generate clock SB. Clock SB is
generated by taking clock B, dividing it by the value in the PWMSCLB register and dividing that by two.
Any value written to this register will cause the scale counter to load the new scale value (PWMSCLB).
Read: anytime
Write: anytime (causes the scale counter to load the PWMSCLB value).
Freescale Semiconductor
Reset
Reset
W
W
R
R
Clock SA = Clock A / (2 * PWMSCLA)
Clock SB = Clock B / (2 * PWMSCLB)
Bit 7
Bit 7
PWM Scale A Register (PWMSCLA)
0
0
7
7
When PWMSCLA = 0x0000, PWMSCLA value is considered a full scale
value of 256. Clock A is thus divided by 512.
When PWMSCLB = 0x0000, PWMSCLB value is considered a full scale
value of 256. Clock B is thus divided by 512.
0
0
6
6
6
6
Figure 12-11. PWM Scale A Register (PWMSCLA)
Figure 12-12. PWM Scale B Register (PWMSCLB)
MC9S12E128 Data Sheet, Rev. 1.07
0
0
5
5
5
5
NOTE
NOTE
0
0
4
4
4
4
0
0
3
3
3
3
Chapter 12 Pulse-Width Modulator (PWM8B6CV1)
0
0
2
2
2
2
0
0
1
1
1
1
Bit 0
Bit 0
0
0
0
0
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