参数资料
型号: MC9SDG256BMFUR2
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP80
封装: 14 X 14 MM, 2.20 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-80
文件页数: 122/155页
文件大小: 2684K
代理商: MC9SDG256BMFUR2
MC9S12DP256B Device User Guide — V02.14
69
Table 2-2 MC9S12DP256 Power and Ground Connection Summary
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.
Mnemonic
Pin Number
Nominal
Voltage
Description
112-pin QFP
VDD1, 2
13, 65
2.5 V
Internal power and ground generated by internal regulator
VSS1, 2
14, 66
0V
VDDR
41
5.0 V
External power and ground, supply to pin drivers and internal
voltage regulator.
VSSR
40
0 V
VDDX
107
5.0 V
External power and ground, supply to pin drivers.
VSSX
106
0 V
VDDA
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.
VSSA
86
0 V
VRL
85
0 V
Reference voltages for the analog-to-digital converter.
VRH
84
5.0 V
VDDPLL
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.
VSSPLL
45
0 V
VREGEN
97
5V
Internal Voltage Regulator enable/disable
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