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R61509V Target Spec
Rev. 0.11 April 25, 2008, page 14 of 181
Pin Function
Table 5 External Power Supply
Signal I/O Connect to Function
When not
used
VCC I
Power
supply
Power supply for Internal VDD regulator.
VCC
≧
IOVCC
―
IOVCC I
Power
supply
Power supply for interface pins. ―
GND I
Power
supply
GND level for internal logic and interface pins. GND=0V. ―
VCI I
Power
supply
Power supply for liquid crystal power supply analog circuit. ―
VCILVL I
Reference
power
supply
Connect to an external power supply at the same level as VCI the
power supply for liquid crystal power supply analog circuit. In case of
COG, connect to VCI on the FPC to prevent noise.
―
AGND I
Power
supply
Analog GND (for logic regulator and liquid crystal power supply).
AGND = 0V.
In case of COG, connect to GND on the FPC to prevent noise.
―
VPP1 I
Power
supply
Open or
AGND
VPP3A I
Power
supply
Power supply for internal NVM.
See section “NVM Control” for input voltages during write and erase
operation using VPP1-VPP3A pins.
Open or
AGND
Note 1: VCC, GND and AGND pins are allocated several different places on the chip. Make sure to connect
all of them to power following “Connection Example”.
Table 6 Bus Interface (Amplitude: IOVCC~GND)
Signal I/O Connect to Function
When not
used
CSX I
Host
processor
Chip selection signal. (Amplitude: IOVCC-GND)
Low: The R61509V is selected and accessible.
High: The R61509V is not selected and not accessible.
IOVCC
RS I
Host
processor
Register selection signal. (Amplitude: IOVCC-GND)
Low: Index register is selected.
High: Control register is selected.
IOVCC
WRX_SCL I
Host
processor
Write strobe signal when 80-system bus interface is selected.
Data are written when Low level.
Synchronous clock signal when clock synchronous serial
interface is selected.
(Amplitude: IOVCC-GND)
IOVCC
RDX I
Host
processor
Read strobe signal when 80-system bus interface is selected.
Data are read when Low level. (Amplitude: IOVCC-GND)
IOVCC
SDI I
Host
processor
Serial data input pin when clock synchronous serial interface is
selected. Data are inputted on the rising edge of SCL signal.
(Amplitude: IOVCC-GND)
GND
/IOVCC
SDO O
Host
processor
Serial data output pin when clock synchronous serial interface is
selected. Data are outputted on the falling edge of SCL signal.
(Amplitude: IOVCC-GND)
Open