MCHC912B32CFUE8 Freescale Semiconductor, MCHC912B32CFUE8 Datasheet - Page 117

• Manufacturer Part Number: MCHC912B32CFUE8
• Description: IC MCU 32K FLASH 8MHZ 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MCHC912B32CFUE8

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 63
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 768 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-QFP
• Cpu Family: HC12
• Device Core Size: 16b
• Frequency (max): 8MHz
• Interface Type: SCI/SPI
• 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 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 80
• Package Type: PQFP
• Package: 80PQFP
• Family Name: HC12
• Maximum Speed: 8 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 63
• Processor Series: HC912B
• Core: HC12
• Data Ram Size: 1 KB
• Maximum Clock Frequency: 8 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Development Tools By Supplier: M68EVB912B32E
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
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