MC68HC912B32MFU8 MOTOROLA [Motorola, Inc], MC68HC912B32MFU8 Datasheet - Page 10

• Manufacturer Part Number: MC68HC912B32MFU8
• Description: 16-Bit Microcontroller
• Manufacturer: MOTOROLA [Motorola, Inc]

3.2 Power Supply Pins
3.2.1 Internal Power (V
3.2.2 External Power (V
3.2.3 V
3.2.4 Analog-to-Digital Reference Voltages (V
3.2.5 V
3.2.6 V
10
MOTOROLA
MC68HC912B32 power and ground pins are described below and summarized in Table 4.
Power is supplied to the MCU through V
duration current demands on the power supply, use bypass capacitors with high-frequency character-
istics and place them as close to the MCU as possible. Bypass requirements depend on how heavily
the MCU pins are loaded.
External power and ground for I/O drivers. Because fast signal transitions place high, short-duration cur-
rent demands on the power supply, use bypass capacitors with high-frequency characteristics and
place them as close to the MCU as possible. Bypass requirements depend on how heavily the MCU
pins are loaded.
Provides operating voltage and ground for the analog-to-digital converter. This allows the supply volt-
age to the A/D to be bypassed independently.
Flash EEPROM programming voltage and supply voltage during normal operation.
High voltage supply to EEPROM. Used to monitor charge pump output and testing. Not intended for
general applications use.
DDA
FP
PP
Mnemonic
, V
V
V
V
V
V
V
V
V
V
V
SSA
DDX
DDA
SSX
SSA
DD
SS
RH
PP
RL
FP
Table 4 MC68HC912B32 Power and Ground Connection Summary
Pin Number
DD
DDX
10, 47
11, 48
31, 78
30, 77
) and Ground (V
59
60
49
50
69
37
) and Ground (V
Internal power and ground.
External power and ground, supply to pin drivers.
Operating voltage and ground for the analog-to-digital converter,
allows the supply voltage to the A/D to be bypassed independently.
Reference voltages for the analog-to-digital converter.
Programming voltage for the Flash EEPROM and required supply
for normal operation.
High voltage supply to EEPROM used for test purposes only in
special modes.
SS
DD
SSX
)
and V
RH
)
, V
SS
RL
. Because fast signal transitions place high, short-
)
Description
MC68HC912B32TS/D
MC68HC912B32