MC9S12A256 Motorola, MC9S12A256 Datasheet - Page 70
MC9S12A256
Manufacturer Part Number
MC9S12A256
Description
MC9S12DT256 Device User Guide V03.03
Manufacturer
Motorola
Datasheet
1.MC9S12A256.pdf
(130 pages)
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MC9S12DT256 Device User Guide — V03.03
2.4.7 VREGEN — 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
Mnemonic
VREGEN
V
V
DDPLL
SSPLL
112-pin QFP
Pin Number
43
45
97
Nominal
Voltage
2.5 V
0 V
5V
Provides operating voltage and ground for the Phased-Locked
Internal Voltage Regulator enable/disable
Loop. This allows the supply voltage to the PLL to be
bypassed independently. Internal power and ground
generated by internal regulator.
Description