MC9S12HZ128VAL Freescale Semiconductor, MC9S12HZ128VAL Datasheet - Page 457

• Manufacturer Part Number: MC9S12HZ128VAL
• Description: IC MCU 16BIT 2K FLASH 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HCS12r

Specifications of MC9S12HZ128VAL

• Core Processor: HCS12
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: CAN, EBI/EMI, I²C, SCI, SPI
• Peripherals: LCD, Motor control PWM, POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 6K x 8
• Voltage - Supply (vcc/vdd): 2.35 V ~ 5.5 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 112-LQFP
• Processor Series: S12H
• Core: HCS12
• Data Bus Width: 16 bit
• Data Ram Size: 6 KB
• Interface Type: I2C/SCI/SPI
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 85
• Number Of Timers: 8
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 16-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

15.3.2.12 PWM Channel Counter Registers (PWMCNTx)
Each channel has a dedicated 8-bit up/down counter which runs at the rate of the selected clock source.
The counter can be read at any time without affecting the count or the operation of the PWM channel. In
left aligned output mode, the counter counts from 0 to the value in the period register – 1. In center aligned
output mode, the counter counts from 0 up to the value in the period register and then back down to 0.
Any value written to the counter causes the counter to reset to 0x0000, the counter direction to be set to
up, the immediate load of both duty and period registers with values from the buffers, and the output to
change according to the polarity bit. The counter is also cleared at the end of the effective period (see
Section 15.4.2.5, “Left Aligned Outputs,”
details). When the channel is disabled (PWMEx = 0), the PWMCNTx register does not count. When a
channel becomes enabled (PWMEx = 1), the associated PWM counter starts at the count in the
PWMCNTx register. For more detailed information on the operation of the counters, reference
Section 15.4.2.4, “PWM Timer Counters.”
In concatenated mode, writes to the 16-bit counter by using a 16-bit access or writes to either the low- or
high-order byte of the counter will reset the 16-bit counter. Reads of the 16-bit counter must be made by
16-bit access to maintain data coherency.
Freescale Semiconductor
Reset
Reset
Reset
W
W
W
R
R
R
Bit 7
Bit 7
Bit 7
0
0
0
0
0
0
7
7
7
Writing to the counter while the channel is enabled can cause an irregular
PWM cycle to occur.
Figure 15-15. PWM Channel Counter Registers (PWMCNT0)
Figure 15-16. PWM Channel Counter Registers (PWMCNT1)
Figure 15-17. PWM Channel Counter Registers (PWMCNT2)
6
0
0
6
0
0
6
0
0
6
6
6
MC9S12HZ256 Data Sheet, Rev. 2.05
5
0
0
5
0
0
5
0
0
5
5
5
and
Section 15.4.2.6, “Center Aligned Outputs,”
NOTE
4
0
0
4
0
0
4
0
0
4
4
4
3
0
0
3
0
0
3
0
0
3
3
3
Chapter 15 Pulse-Width Modulator (PWM8B6CV1)
2
0
0
2
0
0
2
0
0
2
2
2
1
0
0
1
0
0
1
0
0
1
1
1
for more
Bit 0
Bit 0
Bit 0
0
0
0
0
0
0
0
0
0
457