Datasheet

MC9S08GT16A/GT8A Data Sheet, Rev. 1
Freescale Semiconductor NON-DISCLOSURE AGREEMENT REQUIRED 9
Contents
Section Number Title Page
Chapter 1
Device Overview
1.1 Introduction .....................................................................................................................................19
1.1.1 Devices in the MC9S08GT16A/GT8A Series ..................................................................19
1.1.2 MCU Block Diagram ........................................................................................................19
1.2 System Clock Distribution ..............................................................................................................21
Chapter 2
Pins and Connections
2.1 Introduction .....................................................................................................................................23
2.2 Device Pin Assignment ...................................................................................................................23
2.3 Recommended System Connections ...............................................................................................27
2.3.1 V
DD
, V
SS
, V
DDAD
, V
SSAD
, V
REFH
, V
REFL
— Power and Voltage References ...............28
2.3.2 PTG1/XTAL, PTG2/EXTAL — Oscillator ......................................................................28
2.3.3
RESET — External Reset Pin ...........................................................................................29
2.3.4 PTG0/BKGD/MS — Background / Mode Select .............................................................29
2.3.5 IRQ — External Interrupt Request Pin .............................................................................30
2.3.6 General-Purpose I/O and Peripheral Ports ........................................................................30
2.3.7 Signal Properties Summary ...............................................................................................31
Chapter 3
Modes of Operation
3.1 Introduction .....................................................................................................................................33
3.1.1 Features .............................................................................................................................33
3.2 Run Mode ........................................................................................................................................33
3.3 Active Background Mode ................................................................................................................33
3.4 Wait Mode .......................................................................................................................................34
3.5 Stop Modes ......................................................................................................................................35
3.5.1 Stop1 Mode .......................................................................................................................35
3.5.2 Stop2 Mode .......................................................................................................................35
3.5.3 Stop3 Mode .......................................................................................................................36
3.5.4 Active BDM Enabled in Stop Mode .................................................................................37
3.5.5 LVD Enabled in Stop Mode ..............................................................................................37
3.5.6 On-Chip Peripheral Modules in Stop Modes ....................................................................38