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| MC9S12DT256_06 Datasheet, PDF (68/132 Pages) Freescale Semiconductor, Inc – Device User Guide V03.07 | |||
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MC9S12DT256 Device User Guide â V03.07
Pin Number
Mnemonic
112-pin QFP
VDDPLL
43
VSSPLL
45
VREGEN
97
Nominal
Voltage
2.5 V
0V
5V
Description
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.
Internal Voltage Regulator enable/disable
2.4.7 VREGEN â On Chip Voltage Regulator Enable
Enables the internal 5V to 2.5V voltage regulator. If this pin is tied low, VDD1,2 and VDDPLL must be
supplied externally.
68
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