Names And Functions Of Parts - Epson S5U1C88816P Manual

4

NAMES AND FUNCTIONS OF PARTS

This section describes the names and functions of the parts of the S5U1C88816P.
RESET VDC1 OSCC
VDC0 VDC2
PRC88816
E0C88816/F360 Peripheral circuit board
(1) RESET switch
This switch resets the S5U1C88816P circuit, and
provides the reset signal to ICE.
(2) VDC2, VDC1 and VDC0 LEDs
The LED will go ON/OFF according to the
below combinations, depending on the internal
operating voltage that has been set.
Table 4.1 Display of VDC2, VDC1 and VDC0 LED
Internal
operating voltage VDC2
1.3 V
2.2 V
3.3 V
(3) OSCC LED
This LED goes ON when the OSCC register is
set to "1" and OFF when the register is set to "0".
(4) MODE LED
This LED goes ON when the S1C88 Core CPU
operates in maximum mode and OFF when it
operates in minimum mode.
(5) SVDON LED
This LED goes ON when the SVDON register is
set to "1" also during auto sampling operation,
and OFF when the register is set to "0".
(6) HVLD LED
This LED goes ON when the OSCC register or
BZON register is set to "1" and OFF when the
register is set to "0".
Furthermore, the LED goes ON during buzzer
or melody output when heavy load protection
mode is selected by mask option.
(7) LCDC LED
This LED goes ON when the LCD0 and LCD1
registers are set to "1" and OFF when the
registers are both set to "0".
S5U1C88816P MANUAL
(PERIPHERAL CIRCUIT BOARD FOR S1C88816/8F360)
SVDON LCDC LCD5.5V
MODE HVLD LCD4.5V EXLCD
Fig. 4.1 Panel layout
LED
VDC1 VDC0
OFF OFF ON
OFF ON OFF
ON OFF OFF
4 NAMES AND FUNCTIONS OF PARTS
VSVD
MONITOR
I/O#3
(8) LCD4.5V LED
This LED goes ON when the 4.5 V LCD power
supply is used.
(9) LCD5.5V LED
This LED goes ON when the 5.5 V LCD power
supply is used.
(10) EXLCD LED
This LED goes ON when an external LCD power
supply is used.
(11) VSVD volume
This is the volume for varying the power
supply voltage apparently to confirm the
supply voltage detection function. (Refer to
Section 3.2, "Differences from Actual IC".)
(12) LED monitor connector (MONITOR)
This is a connector for monitoring the above
LED signals. The following signals are output
from the connecter pins.
1 pin: V
SS
3 pin: VDC1
5 pin: OSCC
7 pin: TBD
9 pin: SVDON
Fig. 4.2 Pin assignment of LED monitor connector
(13) I/O #1, I/O #2 and I/O #3 connectors
These are the connectors for connecting the I/O
and LCD. The I/O cables (80-pin/40-pin × 2 flat
type and 60-pin/30-pin × 2 flat type) are used
to connect the S5U1C88816P to the target
system.
EPSON
I/O#1
I/O#2
EPSON
2 pin: VDC0
4 pin: VDC2
6 pin: LCDC
8 pin: TBD
10 pin: HVLD
1 pin
2 pin
5