M37160MF datasheet(8/131 Pages) RENESAS

8 / 131 page

Rev.1.01

2003.11.13

page 8 of 130

M37160M8/MA/MF-XXXSP/FP,M37160EFSP/FP

Notes : Port Pi (i = 0 to 3) has a port Pi direction register that can be used to program each bit for input (“0”) or an output (“1”). The pins programmed as “1” in the

direction register are output pins. When pins are programmed as “0,” they are input pins. When pins are programmed as output pins, the output data is

written into the port latch and then output. When data is read from the output pins, the data of the port latch, not the output pin level, is read. This allows a

previously output value to be read correctly even if the output LOW voltage has risen due to, for example, a directly-driven light emitting diode. The input pins

are in the floating state, so the values of the pins can be read. When data is written to the input pin, it is written only into the port latch, while the pin remains

in the floating state.

❈ LED drive ports 4 (P24–P27)

Name

Input/

Functions

Output

P50/HSYNC Input P5

Input

Port P5 is a 2-bit input port.

P51/VSYNC Horizonta synchronous signal

Input

P50 pin is also used as a horizontal synchronous signal input HSYNC for OSD.

Vertical synchronous signal

Input

P51 pin is a vertical synchronous signal input VSYNC for OSD.

P52/B,

Output P5

output

Pins P52–P55 are 4-bit output port. The output structure is CMOS output.

P53/G,

OSD output

output

Pins P52–P55 are also used as OSD output pins R, G, B and OUT respectively. The output

P54/R,

structure is CMOS output.

P55/OUT

FILT

Clock oscillation

Input

Connect a capacitor between FILT and Vss.

filter

Table 7.2 PIN DESCRIPTION (continued)

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