MC68HC912B32VFU8 Freescale Semiconductor, MC68HC912B32VFU8 Datasheet - Page 132
MC68HC912B32VFU8
Manufacturer Part Number
MC68HC912B32VFU8
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68HC912B32VFU8.pdf
(334 pages)
Specifications of MC68HC912B32VFU8
Cpu Family
HC12
Device Core Size
16b
Frequency (max)
8MHz
Interface Type
SCI/SPI
Program Memory Type
EPROM
Program Memory Size
32KB
Total Internal Ram Size
1KB
# I/os (max)
63
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 105C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
80
Package Type
PQFP
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68HC912B32VFU8
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
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Pulse-Width Modulator (PWM)
11.2.7 PWM Scale Register 1
Read: Anytime
Write: Anytime
A write causes the scaler counter PWSCNT1 to load the PWSCAL1 value unless it is in special mode with
DISCAL = 1 in the PWTST register.
PWM channels 2 and 3 can select clock S1 (scaled) as its input clock by setting the control bit PCLK2
and PCLK3 respectively. Clock S1 is generated by dividing clock B by the value in the PWSCAL1 register
plus one and dividing again by two. When PWSCAL1 = $FF, clock B is divided by 256 then divided by two
to generate clock S1.
11.2.8 PWM Scale Counter 1 Value
Read: Anytime
PWSCNT1 is a down-counter that, upon reaching $00, loads the value of PWSCAL1.
132
Address: $0046
Address: $0047
Reset:
Reset:
Read:
Read:
Write:
Write:
Figure 11-11. PWM Scale Counter 1 Value (PWSCNT1)
Bit 7
Bit 7
Bit 7
Bit 7
0
0
Figure 11-10. PWM Scale Register 1 (PWSCAL1)
= Unimplemented
Bit 6
Bit 6
6
0
6
0
M68HC12B Family Data Sheet, Rev. 9.1
Bit 5
Bit 5
5
0
5
0
Bit 4
Bit 4
4
0
4
0
Bit 3
Bit 3
3
0
3
0
Bit 2
Bit 2
2
0
2
0
Bit 1
Bit 1
1
0
1
0
Freescale Semiconductor
Bit 0
Bit 0
Bit 0
Bit 0
0
0
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