MC68HC912B32VFU8 Freescale Semiconductor, MC68HC912B32VFU8 Datasheet - Page 117
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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10.7 Clock Registers
This section describes the clock registers. All register addresses shown reflect the reset state. Registers
may be mapped to any 2-Kbyte space.
10.7.1 Slow Mode Divider Register
SLDV2–SLDV0 — Slow Mode Divisor Selector Bits
Freescale Semiconductor
The value 2 raised to the power indicated by these three bits produces the slow mode frequency
divider. The range of the divider is 2 to 128 by steps of power of 2. When the bits are clear, the divider
is bypassed.
example oscillator frequencies.
SLDV2
Address: $00E0
0
0
0
0
1
1
1
1
Reset:
Read:
Write:
Table 10-2
SLDV1
Bit 7
0
0
0
0
1
1
0
0
1
1
Figure 10-5. Slow Mode Divider Register (SLOW)
Table 10-2. Slow Mode Register Divider Rates
shows the divider for all bit conditions and the resulting bus rate for three
= Unimplemented
SLDV0
6
0
0
0
1
0
1
0
1
0
1
M68HC12B Family Data Sheet, Rev. 9.1
Divider
5
0
0
(2
128
Off
16
32
64
2
4
8
x
)
4
0
0
Oscillator)
Bus Rate
62.5 kHz
(16-MHz
500 kHz
250 kHz
125 kHz
8 MHz
4 MHz
2 MHz
1 MHz
3
0
0
Oscillator)
SLDV2
Bus Rate
62.5 kHz
31.2 kHz
500 kHz
250 kHz
125 kHz
(8-MHz
4 MHz
2 MHz
1 MHz
2
0
SLDV1
1
0
Oscillator)
Bus Rate
62.5 kHz
31.2 kHz
15.6 kHz
500 kHz
250 kHz
125 kHz
(4-MHz
2 MHz
1 MHz
SLDV0
Bit 0
0
Clock Registers
117
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