Panasonic DP-3000 Technical Manual page 25

1.1.14. Panel PC Board
This Panel PC Board consists of Panel Control Sub-CPU, LCD Controller, Touch Panel Controller, S-RAM
Memory, FLASH Memory (Program, Image Data), Alarm IC (Backup), LED, and Key Switch.
The Sub-CPU receives the command of synchronized serial data from SC PCB and executes LCD Display,
LED Lamp, Switching Scan, Key Touch Sound, and Alarm Sound. The signal PON is turned to LOW with
the command from SC PCB and shifts to Sleep Mode. When Sleep Mode (Auto Off) is on, only +5VP is
reactivated and +5V (for LED Driver) and +24V (for Status LED, Alarm, and Back light) is cut off. After
detecting the signal nWAKEUP which is input from SC PCB, the signal nPOWSAVE is turned to HIGH in
order to recover from Sleep Mode and reactivate the main power of the machine.
NMI
nWAKEUP
nSLPKY
nRTCIRQ
POWSAVE
TXD
RXD
DBGTX
DBGRX
BZCLK
CPU (SH7041)
INTC
(8ch+NMI)
A/D
SCI
(2ch)
MTU
(5ch)
A21 1
F-ROM (Program)
(8M/16Mx16)
A
A19 1
F-ROM (Program)
(16Mx16)
A 1
A15 1
S-RAM (64KB)
A 1
A15 1 LCDC
(LCD Controller)
M66272FP
TPCCLK
TPC
TPCTX
(Touch Panel
Controller)
TPCRX
ADS7843
A3 1
A3 1
RTC
PD4992
LEDCT0,1
LED0
SCN0
KEYIN0
25
)
)
LCD Module
D3 1
EDMMR63B0F
Touch Panel
Matrix Data
EMU601A2MA12
PNL2
7
(SW Board)
KEY: MAX40
7
LED: MAX14
7