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S1D13505 Interfacing to the NEC V832 Microprocessor
X23A-G-012-02 Issue Date: 01/02/05
4 V832 to S1D13505 Interface
4.1 Hardware Description

The NEC V832 microprocessor features config urable chip select lines which can easily be

used for an external LCD controller. It provides all the necessar y internal address deco ding

and control signals required by the S1D13505.

The diagram below shows a typical implementation utilizing the S1D13505.

Figure 4-1: NEC V832 to S1D13505 Configuration Schematic

Note
For pin mapping see Table3-1:, Host Bus Interface Pin Mapping, on page 10.
WE1#
WE0#
DB[15:0]
WAIT#
RD#
BUSCLK
S1D13505
CS#
M/R#
RESET#
AB[20:1]
A21
LUBEN
IOWR
D[15:0]
CSn
IORD
SDCLKOUT
READY
A[25:1]
NEC V832
Pull-up
BS#
VDD
VDD(+3.3V)
System RESET
AB0
VDD_O +3.3V
+2.5V
VDD_I
RD/WR#
LLBEN

When connecting the S1D13505 RESET# pin, the system designer should be aware of all

conditions that may reset the S1D13505 (e.g. CPU reset can be asserted during wake-up

from power-down modes, or during debug states).

Note: