MC9S12E256VFUE Freescale Semiconductor, MC9S12E256VFUE Datasheet - Page 402
MC9S12E256VFUE
Manufacturer Part Number
MC9S12E256VFUE
Description
IC MCU 256K FLASH 25MHZ 80-QFP
Manufacturer
Freescale Semiconductor
Series
HCS12r
Datasheet
1.MC9S12E256CFUE.pdf
(602 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC9S12E256VFUE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Chapter 12 Pulse-Width Modulator (PWM8B6CV1)
12.4.1.3
Each PWM channel has the capability of selecting one of two clocks. For channels 0, 1, 4, and 5 the clock
choices are clock A or clock SA. For channels 2 and 3 the choices are clock B or clock SB. The clock
selection is done with the PCLKx control bits in the PWMCLK register.
12.4.2
The main part of the PWM module are the actual timers. Each of the timer channels has a counter, a period
register and a duty register (each are 8 bit). The waveform output period is controlled by a match between
the period register and the value in the counter. The duty is controlled by a match between the duty register
and the counter value and causes the state of the output to change during the period. The starting polarity
of the output is also selectable on a per channel basis.
402
Clock Source
PWMEx
(clock edge sync)
PWM Channel Timers
Clock Select
GATE
Changing clock control bits while channels are operating can cause
irregularities in the PWM outputs.
up/down
reset
Figure 12-35. PWM Timer Channel Block Diagram
8-Bit Counter
PWMCNTx
Q
Q
T
R
MC9S12E256 Data Sheet, Rev. 1.08
NOTE
Figure 12-35
8-Bit Compare =
8-Bit Compare =
PWMDTYx
PWMPERx
CAEx
shows a block diagram for PWM timer.
T
R
Q
Q
PPOLx
M
U
X
From Port PWMP
Data Register
Freescale Semiconductor
M
U
X
To Pin
Driver
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