PIN CONNECTIONS
Table 1. MPC18730 Pin Definitions (continued)
A functional description of each pin can be found in the Functional Pin Description section beginning on page 14.
Pin
Function
Pin Number
Pin Name
Formal Name
Definition
Switching Power Supply Circuit 2 Coil Connection
Switching Power Supply Circuit 2 Coil Connection
Switching Power Supply Circuit 2 Output
Power Switch 2 Output
37
38
39
40
41
42
43
SW2
SW2
Power
Power
Output
Output
Input
Switching
Switching
VIN2
Voltage Output
Voltage Output
Voltage Input
VOUT2
Power Switch 2 Voltage Input
VO2_SENSE_IN
VO2_SENSE
HG
Switching Power Supply Circuit 2 VO2_SENSE Voltage Input
Input
Voltage Input
Switching Power Supply Circuit 2 Step down Top side FET Gate
Output for Ni_mh
Output
Step Down Top FET 2
Switching Power Supply Circuit 2 Step down Bottom side FRT Gate
Output for Ni_mh
44
LG
Output
Step Down Bottom
FET 2
External Transistor Gate Signal Output
45
46
47
48
49
50
VGATE_EXT
SREGC3
SREGO3
SREGI3
Output
Power
Output
Power
Power
Output
Gate Switch
Series Pass Power Supply Circuit 3 External Feedback Connection
Series Pass Power Supply Circuit 3 Output
Regulator Capacitor 3
Regulator Output 3
Regulator Input 3
Series Pass Power Supply Circuit 3 Power Supply
Series Pass Power Supply Circuit 2 External Feedback Connection
SREGC2
SREG2G
Regulator Capacitor 2
Series Pass Power Supply Circuit 2 External Transistor Gate Signal
Output
Regulator Gate
Output 2
Series Pass Power Supply Circuit 2 Output
Series Pass Power Supply Circuit 2 Power Supply
Series Pass Power Supply Circuit 1 External Feedback Connection
Series Pass Power Supply Circuit 1 Output
Series Pass Power Supply Circuit 1 Power Supply
GND
51
52
53
54
55
56
57
58
59
60
61
62
63
64
SREGO2
SREGI2
SREGC1
SREGO1
SREGI1
GND
Output
Power
Power
Output
Power
Ground
Output
Input
Regulator Output 2
Regulator Input 2
Regulator Capacitor 1
Regulator Output 1
Regulator Input 1
Ground
Reference Voltage Output
VREF
Reference Voltage
Data Signal
Serial Interface Data Signal Input
DATA
Serial Interface Strobe Signal Input
Serial Interface Clock Signal Input
Watchdog Timer Capacitor Connection
Start-Up Sequence Setting Input
STRB
Input
Strobe
SCKIN
Input
Serial Clock
WATCHDOG
SEQ_SELECT
EXT_CLOCK
SLEEP
Input
Watch Dog Timer
Sequence Input
Clock Input
Input
External Synchronous Clock Signal Input
Sleep Signal Input
Input
Input
Sleep Signal
18730
Analog Integrated Circuit Device Data
Freescale Semiconductor
5
FREESCALE [ Freescale ]
