m66271fp Renesas Electronics Corporation., m66271fp Datasheet - Page 4

• Manufacturer Part Number: m66271fp
• Description: Operation Panel Controller
• Manufacturer: Renesas Electronics Corporation.

M66271FP
Pin Description
MPU
interface
LCD
interface
Oscillator
Others
REJ03F0267-0200 Rev.2.00 Mar 18, 2008
Page 4 of 27
Item
D <15:0>
A <13:0>
IOCS
MCS
HWR
LWR
RD
MPUSEL
RESET
MPUCLK
BHE
WAIT
UD <3:0>
CP
LP
FLM
M
LCDENB
OSC1
OSC2
V
V
N.C
Pin Name
DD
SS
Input/
Output
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Output
Output
Output
Output
Output
Output
Output
Input
Output
—
—
—
Output
Input/
MPU data bus
Connect to MPU data bus.
Selecting 8-bit MPU by MPUSEL input, D <15:8> connect to V
MPU address bus
Connect to MPU address bus. When selecting 8-bit MPU, use A <13:0>. And
selecting16-bit MPU, use A <13:1> for the address bus with combining A <0> and
BHE by the method of access to internal VRAM (Refer to figure 1). Use A <4:0> for
selecting address of control register.
Chip select input of control register
When this pin is "L", select the internal control register. Assign to I/O space of MPU.
Chip select input of VRAM
When this pin is "L", select the internal VRAM. Assign to memory space of MPU.
High-write strobe input
When this pin is "L", data write to the internal VRAM. HWR is valid only in using 16-
bit MPU controlled byte access by LWR and HWR. (Refer to figure 1)
Low-write strobe input
When this pin is ''L", data write to the internal control register or VRAM. (Refer to
figure 1)
Read strobe input
When this pin is "L", data read from the internal control register or VRAM. (Refer to
figure 1)
8/16-bit MPU select input
According to MPU, set "V
Reset input
Use reset signal of MPU. When this pin is "L", initialize all internal control register
and counter.
MPU clock
Input of MPU clock.
Bus-high-enable input
This pin is valid when using 16-bit MPU controlled byte access by A <0> and BHE
(Refer to figure 1). Connect to "V
Set to ''L'' when using the additional function for the LCD module built-in system.
WAIT output for MPU
This signal makes WAIT for MPU.
Change WAIT ''L'' at timing of falling edge of overlapping with MCS and (RD or LWR
or HWR).
And return to "H" at synchronizing with the rising edge of MPUCLK after internal
processing.
(Output WAIT only when requested access from MPU to VRAM during cycle steal
access.)
Display data bus for LCD
Transfer the LCD display data with 4-bit parallel signal.
Mutually output upper/lower data every CP output.
Display data transfer clock
Shift clock for the transfer of display data to LCD.
Take the display data of UD <3:0> to LCD at falling edge of CP.
Display data latch pulse
This clock use both as the latch pulse of display data for LCD and the transfer of
scanning signal.
LP output when finish the transfer of display data of a line.
Latch of display data and the transfer of scanning signal at falling edge of LP.
First line marker signal
Output the start pulse of scanning line.
This signal is "H" active, the IC for driving scanning line catch FLM at falling edge of
LP.
LCD alternating signal output
Signal for driving LCD by alternating current.
LCD (ON/OFF) control signal output
Output data which is set at bit "0" of mode register (R1) in control register. This
signal can use for controlling the LCD power supply, because LCDENB set to "L" by
RESET.
Input pin for oscillator
Output pin for oscillator
Power supply (source + 5 V)
Ground
No connection
SS
" for 8-bit MPU and set "V
DD
" when using 8-bit MPU.
Generate an internal clock.
For crystal oscillator or external clock signal.
Function
DD
" for 16-bit MPU
DD
or V
SS
16
14
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
7
12
10
Number
of Pins