MC9S12G Family Reference Manual Rev.1.27 
NXP Semiconductors 29
Chapter 1  
Device Overview MC9S12G-Family
Revision History
1.1 Introduction
The MC9S12G-Family is an optimized, automotive, 16-bit microcontroller product line focused on 
low-cost, high-performance, and low pin-count. This family is intended to bridge between high-end 8-bit 
microcontrollers and high-performance 16-bit microcontrollers, such as the MC9S12XS-Family. The 
MC9S12G-Family is targeted at generic automotive applications requiring CAN or LIN/J2602 
communication. Typical examples of these applications include body controllers, occupant detection, door 
modules, seat controllers, RKE receivers, smart actuators, lighting modules, and smart junction boxes.
The MC9S12G-Family uses many of the same features found on the MC9S12XS- and MC9S12P-Family, 
including error correction code (ECC) on flash memory, a fast analog-to-digital converter (ADC) and a 
frequency modulated phase locked loop (IPLL) that improves the EMC performance. 
Version
Number
Revision
Date
Description of Changes
Rev 0.27 1-Apr-2011  • Typos and formatting
Rev 0.28 11-May-2011  •
Rev 0.29 10-Jan-2011  • Corrected Figure 1-4
Rev 0.30 10-Feb-2012  • Updated Table 1-5(added mask set 1N75C)
 • Typos and formatting
Rev 0.31 15-Mar-2012  • Updated Table 1-1 (added S12GSA devices)
 • Updated Figure 1-1
 • Updated Table 1-5 (added S12GA devices)
 • Added Section 1.8.2, “S12GNA16 and S12GNA32”
 • Added Section 1.8.5, “S12GA48 and S12GA64”
 • Added Section 1.8.7, “S12GA96 and S12GA128”
 • Typos and formatting
Rev 0.32 07-May-2012  • Updated Section 1.19, “BDM Clock Source Connectivity”
 • Typos and formatting
Rev 0.33 27-Sep-2012  • Corrected Figure 1-4
 • Corrected Figure 1-5
 • Corrected Figure 1-6
Rev 0.34 25-Jan-2013 Added KGD option for the S12GA192 and the S12GA240
 • Updated Table 1-1
 • Corrected Table 1-2
 • Corrected Table 1-6
Rev 0.35 02-Jul-2014  • Corrected Table 1 - 2
Rev 0.36 14-Jun-2017  • Extended Table 1-5