MC68HC912B32CFU8 Freescale Semiconductor, MC68HC912B32CFU8 Datasheet - Page 113
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MC68HC912B32CFU8
Manufacturer Part Number
MC68HC912B32CFU8
Description
IC MCU 32K FLASH 8MHZ 80-QFP
Manufacturer
Freescale Semiconductor
Series
HC12r
Datasheet
1.MCHC912B32CFUE8.pdf
(334 pages)
Specifications of MC68HC912B32CFU8
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
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC912B32CFU8
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC68HC912B32CFU8
Manufacturer:
FREESCALE
Quantity:
20 000
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Chapter 10
Clock Generation Module (CGM)
10.1 Introduction
The clock generation module (CGM) generates the system clocks and generates and controls the timing
of the reset and power-on reset (POR) logic. The CGM is composed of:
10.2 Block Diagram
Freescale Semiconductor
•
•
•
Clock selection and generation circuitry
Slow-mode clock divider
Reset and stop generation timing and control
EXTAL
XTAL
Older device mask sets do not support the slow-mode clock divider feature.
Register $00E0 is reserved in older devices and provides no function.
Mask sets that do not have the slow-mode clock divider feature on the
MC68HC912B32 include: G96P, G86W, and H91F.
Mask sets that do not have the slow-mode clock divider feature on the
MC68HC12BE32 include: H54T and J38M.
Mask sets that do not have the slow-mode clock divider feature on the
MC68HC(9)12BC32 include: J15G.
CONSUMPTION
OSCILLATOR
REDUCED
÷
2
OSCILLATOR
OUT
E AND P CLOCK
GENERATOR
GENERATOR
T CLOCK
Figure 10-1. CGM Block Diagram
M68HC12B Family Data Sheet, Rev. 9.1
CLOCK DIVIDER
SLOW MODE
NOTE
SLOW E CLOCK
SLOW P CLOCK
P CLOCK (GBT)
E CLOCK (GBT)
WAIT
T CLOCK
P CLOCK
E CLOCK
TO BDLC AND TIM
TO BUSES, BDM,
SPI, SCI, ATD, RTI,
COP, PWM, FEE,
EE, RAM
TO CPU
113
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