MC9S12A128 Datasheet, PDF (37/92 Pages) Motorola, Inc – Microcontroller unit (MCU)

MC9S12A128 Device Guide — V01.01
Table 2-2 MC9S12A128 Power and Ground Connection Summary
Pin Number
Mnemonic
112-pin QFP
Nominal
Voltage
Description
V_{DD1, 2}
V_{SS1, 2}
V_DDR
V_SSR
V_DDX
V_SSX
V_DDA
V_SSA
13, 65
14, 66
41
40
107
106
83
86
2.5 V
0V
5.0 V
0V
5.0 V
0V
5.0 V
0V
Internal power and ground generated by internal regulator
External power and ground, supply to pin drivers and internal
voltage regulator.
External power and ground, supply to pin drivers.
Operating voltage and ground for the analog-to-digital
converters and the reference for the internal voltage regulator,
allows the supply voltage to the A/D to be bypassed
independently.
V_RL
85
V_RH
84
V_DDPLL
43
V_SSPLL
45
0V
5.0 V
2.5 V
0V
Reference voltages for the analog-to-digital converter.
Provides operating voltage and ground for the Phased-Locked
Loop. This allows the supply voltage to the PLL to be
bypassed independently. Internal power and ground
generated by internal regulator.
V_REGEN
97
5V Internal Voltage Regulator enable/disable
37