MC68HC912B32VFU8 Freescale Semiconductor, MC68HC912B32VFU8 Datasheet - Page 121
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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10.8 Clock Divider Chains
Figure
peripherals:
Freescale Semiconductor
•
•
•
•
•
•
•
•
•
SCI — Serial peripheral interface
BDLC — Byte data link communications
RTI — Real-time interrupt
COP — Computer operating properly
TIM — Standard timer module
ECT — Enhanced capture timer
SPI — Serial peripheral interface
ATD — Analog-to-digital converter
BDM — Background debug mode
10-10,
÷
2
4
÷
1, 2, 3, 4, 5, 6, ..., 8190, 8191
Figure
MODULUS DIVIDER:
BAUD RATE (16x)
BAUD RATE (1x)
TRANSMIT
RECEIVE
SC0BD
SCI0
SCI0
10-11,
Figure 10-10. Clock Chain for SCI, BDLC, RTI, and COP
Figure
BITS: R1, R0
REGISTER: BCR1
÷
10-12, and
2
M68HC12B Family Data Sheet, Rev. 9.1
2
÷
÷
÷
2
2
2
BIT: RTBYP
REGISTER: RTICTL
0:0
0:1
1:0
1:1
Figure 10-13
BITS: RTR2, RTR1, AND RTR0
REGISTER: RTICTL
÷
TO BDLC
2
11
÷
÷
÷
÷
÷
÷
summarize the clock divider chains for these
2
2
2
2
2
2
0:0:1
0:1:0
0:1:1
1:0:0
1:0:1
1:1:0
1:1:1
0:0:0
TO RTI
REGISTER: COPCTL
BITS: CR2, CR1, AND CR0
÷
÷
÷
÷
÷
÷
4
4
4
4
2
2
Clock Divider Chains
0:0:1
0:1:0
0:1:1
1:0:0
1:0:1
1:1:0
1:1:1
0:0:0
TO COP
121
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