MC9S12XEG128MAA Freescale Semiconductor, MC9S12XEG128MAA Datasheet - Page 708
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MC9S12XEG128MAA
Manufacturer Part Number
MC9S12XEG128MAA
Description
MCU 16BIT 128K FLASH 80-QFP
Manufacturer
Freescale Semiconductor
Series
HCS12r
Datasheet
1.MC9S12XEP768CAL.pdf
(1328 pages)
Specifications of MC9S12XEG128MAA
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
128KB (128K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
12K 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
12 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
8-ch x 12-bit
No. Of I/o's
59
Eeprom Memory Size
2KB
Ram Memory Size
12KB
Cpu Speed
50MHz
No. Of Timers
3
No. Of Pwm Channels
8
Digital Ic Case Style
QFP
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Chapter 19 Pulse-Width Modulator (S12PWM8B8CV1)
Read: Anytime
Write: Anytime (any value written causes PWM counter to be reset to $00).
19.3.2.13 PWM Channel Period Registers (PWMPERx)
There is a dedicated period register for each channel. The value in this register determines the period of
the associated PWM channel.
The period registers for each channel are double buffered so that if they change while the channel is
enabled, the change will NOT take effect until one of the following occurs:
In this way, the output of the PWM will always be either the old waveform or the new waveform, not some
variation in between. If the channel is not enabled, then writes to the period register will go directly to the
latches as well as the buffer.
See
To calculate the output period, take the selected clock source period for the channel of interest (A, B, SA,
or SB) and multiply it by the value in the period register for that channel:
For boundary case programming values, please refer to
708
Module Base + 0x000C = PWMCNT0, 0x000D = PWMCNT1, 0x000E = PWMCNT2, 0x000F = PWMCNT3
Module Base + 0x0010 = PWMCNT4, 0x0011 = PWMCNT5, 0x0012 = PWMCNT6, 0x0013 = PWMCNT7
Because of an order from the United States International Trade Commission, BGA-packaged product lines and partnumbers
Writing to the counter while the channel is enabled can cause an irregular PWM cycle to occur.
Reset
indicated here currently are not available from Freescale for import or sale in the United States prior to September 2010
•
•
•
•
•
Section 19.4.2.3, “PWM Period and Duty”
W
R
The effective period ends
The counter is written (counter resets to $00)
The channel is disabled
Left aligned output (CAEx = 0)
PWMx Period = Channel Clock Period * PWMPERx Center Aligned Output (CAEx = 1)
PWMx Period = Channel Clock Period * (2 * PWMPERx)
Bit 7
0
0
7
Reads of this register return the most recent value written. Reads do not
necessarily return the value of the currently active period due to the double
buffering scheme.
Figure 19-14. PWM Channel Counter Registers (PWMCNTx)
0
0
6
6
MC9S12XE-Family Reference Manual , Rev. 1.23
5
0
0
5
for more information.
NOTE
NOTE
0
0
4
4
Section 19.4.2.8, “PWM Boundary
0
0
3
3
2
0
0
2
Freescale Semiconductor
0
0
1
1
Cases”.
Bit 0
0
0
0
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