Datasheet

Pinout and Signal Description
MC9S12DP256 — Revision 1.1
Pinout and Signal Description
Table 6 MC9S12DP256 Power and Ground Connection Summary
Mnemonic
Pin Number
Nominal
Voltage
Description
112-pin QFP
V
DD1, 2
13, 65 2.5 V
Internal power and ground generated by internal regulator
V
SS1, 2
14, 66 0V
V
DDR
41 5.0 V
External power and ground, supply to pin drivers and internal
voltage regulator.
V
SSR
40 0 V
V
DDX
107 5.0 V
External power and ground, supply to pin drivers.
V
SSX
106 0 V
V
DDA
83 5.0 V 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
SSA
86 0 V
V
RL
85 0 V
Reference voltages for the analog-to-digital converter.
V
RH
84 5.0 V
V
DDPLL
43 2.5 V 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
SSPLL
45 0 V
VREGEN 97 5V Internal Voltage Regulator enable/disable
Freescale Semiconductor, I
Freescale Semiconductor, Inc.
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