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13
2.3.
PNL PC Board Block Diagram (Panel PCBs)
The PNL1 PCB consist of Panel Control CPU, Flash Memory, S-RAM, LCD Controller, Real Time Clock and
other peripherals. It has no decision making functions, which are controlled by Command Signals from the
SC PCB.
The PNL2, 3 and 4 consist of LED, Switches and Buzzer, which are controlled by PNL1.
other peripherals. It has no decision making functions, which are controlled by Command Signals from the
SC PCB.
The PNL2, 3 and 4 consist of LED, Switches and Buzzer, which are controlled by PNL1.
SCN0 ~5
LED0 ~5
KEYIN0~6
ADDRES
S BUS
A21~1
CPU
CPU (SH7041)
SCI
(2 ch)
MTU
(5 ch)
(5 ch)
INTC
(8ch+NMI)
NMI
nWAKUP
nSLPKY
nRTCIRQ
FROM IC
FROM IC
(Program)
(2 MBx16)
FRM8 PCB
(Progr am
Load )
(4MBx16)
A21~ 1
D15-0
D15-0
A17~1
D15-0
A14~1
D15-0
LCDC
(LCD
(LCD
Controller)
M66273FP
LCD Module
A3~1
PNL2
(SW/LED Board)
KEY:23
LED :4
LED :4
PNL SYSTEM DIAGRAM
D7-0
RTC
(RE AL TIME
CLOCK)
PD4992
SRAM IC
(WORK)
(128kB x 8)
LEDC T0,1
Touch Panel
TX D
RXD
A/ D
PNL3
(SW/LED Board)
KEY :12
LED :6
LED :6
D/A Circuit
BUZZER CLK
Control
Circuit
Circuit
DA5- 0
A 21~1
24V
DC/DC
Converter
3. 3V
IC
5V
BATLVL
24V
5V
PNL4
LED:3
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