MCHC908MR8VFAE Freescale Semiconductor, MCHC908MR8VFAE Datasheet - Page 173
MCHC908MR8VFAE
Manufacturer Part Number
MCHC908MR8VFAE
Description
IC MCU 8K FLASH 8MHZ PWM 32-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MCHC908MR8VFAE.pdf
(372 pages)
Specifications of MCHC908MR8VFAE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI
Peripherals
LVD, POR, PWM
Number Of I /o
16
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 7x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
32-LQFP
Processor Series
HC08MR
Core
HC08
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SCI, SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
33
Number Of Timers
4
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, M68CBL05CE
Minimum Operating Temperature
- 40 C
On-chip Adc
8 bit, 8 Channel
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:
MCHC908MR8VFAE
Manufacturer:
Freescale
Quantity:
8 393
Company:
Part Number:
MCHC908MR8VFAE
Manufacturer:
Freescale Semiconductor
Quantity:
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9.12.2 PWM Counter Modulo Registers
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
NOTE:
The PWM counter modulus registers (PDMODH and PDMODL) hold a
12-bit unsigned number that determines the maximum count for the
up/down or up-only counter. In center-aligned mode, the PWM period
will be twice the modulus (assuming no prescaler). In edge-aligned
mode, the PWM period will equal the modulus.
To avoid erroneous PWM periods, this value is buffered and will not be
used by the PWM generator until the LDOK bit has been set and the next
PWM load cycle begins.
When reading this register, the value read is the buffer (not necessarily
the value the PWM generator is currently using).
Because of the equals-comparator architecture of this PWM, the
modulus = 0 case is considered illegal. Therefore, the modulus register
is not reset, and a modulus value of 0 will result in waveforms
inconsistent with the other modulus waveforms. If a modulus of 0 is
loaded, the counter will continually count down from $FFF. This
operation will not be tested or guaranteed. (The user should consider it
Reset:
Reset:
dress:
dress:
Read:
Read:
Write:
Write:
Pulse-Width Modulator for Motor Control (PWMMC)
Figure 9-31. PWM Counter Modulo Register High (PDMODH)
Ad-
Ad-
Figure 9-32. PWM Counter Modulo Register Low (PDMODL)
$0028
$0029
Bit 7
Bit 7
Bit 7
X
0
0
= Unimplemented X = Indeterminate
= Unimplemented X = Indeterminate
Bit 6
X
6
0
0
6
Bit 5
X
5
0
0
5
Pulse-Width Modulator for Motor Control (PWMMC)
Bit 4
X
4
0
0
4
Bit 11
Bit 3
X
X
3
3
Bit 10
Bit 2
X
X
2
2
Control Logic Block
Bit 9
Bit 1
X
X
1
1
Technical Data
Bit 0
Bit 8
Bit 0
Bit 0
X
X
173
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