MC68HC912B32VFU8 Freescale Semiconductor, MC68HC912B32VFU8 Datasheet - Page 128
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 PWM Register Descriptions
This section provides descriptions of the PWM registers.
11.2.1 PWM Clocks and Concatenate Register
Read: Anytime
Write: Anytime
CON23 — Concatenate PWM Channels 2 and 3 Bit
CON01 — Concatenate PWM Channels 0 and 1 Bit
PCKA2–PCKA0 — Prescaler for Clock A Bits
PCKB2–PCKB0 — Prescaler for Clock B Bits
128
When concatenated, channel 2 becomes the high-order byte and channel 3 becomes the low-order
byte. Channel 2 output pin is used as the output for this 16-bit PWM (bit 2 of port P). Channel 3
clock-select control bits determines the clock source.
When concatenated, channel 0 becomes the high-order byte and channel 1 becomes the low-order
byte. Channel 0 output pin is used as the output for this 16-bit PWM (bit 0 of port P). Channel 1
clock-select control bits determine the clock source.
Clock A is one of two clock sources which may be used for channels 0 and 1. These three bits
determine the rate of clock A, as shown in
Clock B is one of two clock sources which may be used for channels 2 and 3. These three bits
determine the rate of clock B, as shown in
0 = Channels 2 and 3 are separate 8-bit PWMs.
1 = Channels 2 and 3 are concatenated to create one 16-bit PWM channel.
0 = Channels 0 and 1 are separate 8-bit PWMs.
1 = Channels 0 and 1 are concatenated to create one 16-bit PWM channel.
Address: $0040
Reset:
Read:
Write:
PCKA2 (PCKB2)
Figure 11-4. PWM Clocks and Concatenate Register (PWCLK)
CON23
0
0
0
0
1
1
1
1
Bit 7
0
Table 11-1. Clock A and Clock B Prescaler
CON01
6
0
PCKA1 (PCKB1)
M68HC12B Family Data Sheet, Rev. 9.1
PCKA2
0
0
1
1
0
0
1
1
5
0
Table
Table
PCKA1
4
0
PCKA0 (PCKB0)
11-1.
11-1.
PCKA0
0
1
0
1
0
1
0
1
3
0
PCKB2
2
0
Value of Clock A (B)
E ÷ 128
E ÷ 16
E ÷ 32
E ÷ 64
PCKB1
E ÷ 2
E ÷ 4
E ÷ 8
E
1
0
Freescale Semiconductor
PCKB0
Bit 0
0
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