FSP Technology EP450 series - Microprocessor( CPU) Control Circuit

Page 16 of 26 Rev. A
8 Microprocessor(CPU) Control Circuit
The CPU is supplied by +5Vdc power supply to pin7 with ground pin at pin3. An
extra oscillation circuitry consisting of C01, C02, and crystal XL1 is connected to pin4 &5.
The Vesta series is using MOTOROLA/MC68HC908JL8CSP CPU. The pin definition is listed
below(Figure S-6):
PI N FUNCTI ON
Pin1 N/
A
Pin2 SW
Pin3 ground
Pin4 oscillation circuit
Pin5 oscillation circui
t
Pin6 main relay control
Pin7 Power source
Pin8 series detect (GREEN FUNTION)
Pin9 CHG.ON
Pin10 O/P-V detection
Pin11 Input line detection
Pin12 Load detection
Pin13 RXD
Pin14
T
XD
Pin15 Shutdown
Pin16 Buzzer control
Pin17 Battery voltage detection
Pin18 Inverter PWM signal (CPU.M3)
Pin19 Inverter PWM signal (CPU.M2)
Pin20 Inverter PWM signal (CPU.M4)
Pin21 Inverter PWM signal (CPU.M1)
Pin22 VA detect
Pin23 Series detect
Pin24 LED1 control
Pin25 LED2 control
Pin26 LED3 control
Pin27 ZERO-CRO control
Pin28 Buck relay control
Pin29 Boost relay control
Pin30 Reset control
Pin31 O-P Relay
Pin32 Voltage detect