MC68HC908SR12CFA Freescale Semiconductor, MC68HC908SR12CFA Datasheet - Page 112
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MC68HC908SR12CFA
Manufacturer Part Number
MC68HC908SR12CFA
Description
MICROCONTROLLER 48 PIN
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908SR12MFAE.pdf
(404 pages)
Specifications of MC68HC908SR12CFA
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SCI
Peripherals
LVD, POR, PWM, Temp Sensor
Number Of I /o
31
Program Memory Size
12KB (12K x 8)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 14x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
Q1145673
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68HC908SR12CFA
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
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Clock Generator Module (CGM)
8.2 Introduction
Data Sheet
112
8.7
8.8
8.8.1
8.8.2
8.8.3
8.9
8.9.1
8.9.2
8.9.3
This section describes the clock generator module (CGM). The CGM
generates the base clock signal, CGMOUT, which is based on either the
oscillator clock divided by two or the divided phase-locked loop (PLL)
clock, CGMPCLK, divided by two. CGMOUT is the clock from which the
SIM derives the system clocks, including the bus clock, which is at a
frequency of CGMOUT÷2. The PLL clock, CGMVCLK (an integer
multiple of CGMPCLK) provides clock reference for the PWM and
analog modules.
The PLL is a frequency generator designed for use with a low frequency
crystal (typically 32.768kHz) to generate a base frequency and dividing
to a maximum bus frequency of 8MHz.
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
Special Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Acquisition/Lock Time Specifications . . . . . . . . . . . . . . . . . . . 137
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136
CGM During Break Interrupts. . . . . . . . . . . . . . . . . . . . . . . 136
Acquisition/Lock Time Definitions. . . . . . . . . . . . . . . . . . . .137
Parametric Influences on Reaction Time . . . . . . . . . . . . . . 137
Choosing a Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Clock Generator Module (CGM)
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
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