MC9S08SH4CTG Freescale, MC9S08SH4CTG Datasheet - Page 149
MC9S08SH4CTG
Manufacturer Part Number
MC9S08SH4CTG
Description
Manufacturer
Freescale
Datasheet
1.MC9S08SH4CTG.pdf
(338 pages)
Specifications of MC9S08SH4CTG
Cpu Family
HCS08
Device Core Size
8b
Frequency (max)
40MHz
Interface Type
I2C/SCI/SPI
Total Internal Ram Size
256Byte
# I/os (max)
13
Number Of Timers - General Purpose
1
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
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
16
Package Type
TSSOP
Program Memory Type
Flash
Program Memory Size
4KB
Lead Free Status / RoHS Status
Compliant
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Chapter 10
Internal Clock Source (S08ICSV2)
10.1
Introduction
The internal clock source (ICS) module provides clock source choices for the MCU. The module contains
a frequency-locked loop (FLL) as a clock source that is controllable by either an internal or an external
reference clock. The module can provide this FLL clock or either of the internal or external reference
clocks as a source for the MCU system clock. There are also signals provided to control a low power
oscillator (XOSC) module to allow the use of an external crystal/resonator as the external reference clock.
Whichever clock source is chosen, it is passed through a reduced bus divider (BDIV) which allows a lower
final output clock frequency to be derived.
The bus frequency will be one-half of the ICSOUT frequency.
10.1.1
Module Configuration
When the internal reference is enabled in stop mode (IREFSTEN = 1), the voltage regulator must also be
enabled in stop mode by setting the LVDE and LVDSE bits in the SPMSC1 register.
Figure 10-1
shows the MC9S08SH8 block diagram with the ICS highlighted.
MC9S08SH8 MCU Series Data Sheet, Rev. 3
Freescale Semiconductor
149
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