Datasheet

Device Overview
MC9S08GT16A/GT8A Data Sheet, Rev. 1
Freescale Semiconductor 21
Table 1-2 lists the functional versions of the on-chip modules.
1.2 System Clock Distribution
Figure 1-2. System Clock Distribution Diagram
Table 1-2. Block Versions
Module Version
Analog-to-Digital Converter (ATD) 3
Internal Clock Generator (ICG) 4
Inter-Integrated Circuit (IIC) 1
Keyboard Interrupt (KBI) 1
Serial Communications Interface (SCI) 1
Serial Peripheral Interface (SPI) 3
Timer Pulse-Width Modulator (TPM) 2
Central Processing Unit (CPU) 2
ATD has min and max
frequency requirements.
See Chapter 14, “Ana-
log-to-Digital Converter
(S08ATDV3)”
and Appendix A, “Electrical
Characteristics.”
FLASH has frequency
requirements for program
and erase operation.
See Appendix A, “Electrical
Characteristics”.
* ICGLCLK is the alternate BDC clock source for the MC9S08GT16A/GT8A.
TPM1 TPM2 IIC SCI1 SCI2 SPI
BDC
CPU
ATD
RAM FLASH
ICG
ICGOUT
÷2
FFE
SYSTEM
LOGIC
BUSCLK
ICGLCLK*
CONTROL
FIXED FREQ CLOCK (XCLK)
ICGERCLK
RTI
÷2
COP