Sanyo VPC SX 560, VPC-SX560E, VPC-SX560EX 1-6.SY1 CIRCUIT DESCRIPTION, 1. Configuration and Functions, Table 4-1. 8-bitMicroprocessor Port Specification

1-6. SY1 CIRCUIT DESCRIPTION

1. Configuration and Functions

For the overall configuration of the SY1 circuit board, refer to the block diagram. The configuration of the SY1 circuit board centers around a 8-bit microprocessor (IC301).

The 8-bit microprocessor handles the following functions.

1. Operation key input, 2. Mode LCD display, 3. Clock control, 4. Power ON/OFF, 5. Storobe charge control

Pin

Signal

I/O

Outline

1

CHG VOL

I

Strobe charge voltage input (analog input)

I

Key matrix input

2~7

SCAN IN

8

AVDD

-

A/D converter analog power terminal

9

VREF

I

A/D converter standard voltage input terminal

10

I

Standby LED (red)

L : LED light

STBY (R) LED

ON/OFF signal

11

STBY (G) LED

O

Standby LED (green)

ON/OFF signal

L : LED light

12

VSS

-

GND

13

SELF LED

O

Self-timer LED

ON/OFF signal

L : LED light

14~19

NOT USED

-

-

20

O

A/D standard power

L : ON

AVREF ON

ON/OFF signal

21

BUZZER

O

Buzzer output

22

CHG ON

O

signal

H : ON

Flash charge ON/OFF

23~30

NOT USED

-

-

31

VSS

-

GND

32~69

NOT USED

-

-

70

P (A) ON

O

signal

H : ON

DC/DC converter (analog) ON/OFF

71

P ON

O

DC/DC converter (digital) ON/OFF signal

H : ON

72

DIN CONNECT

I

DIN jack connect detection signal

H : Connection

73

I

Memory card attachment detection signal

L : Attachment

CARD

74

AV JACK

I

AV output cable connection detection signal

H : Connection

75

SI

I

Serial communication data input (← ASIC)

76

SO

O

Serial communication data output (→

ASIC)

77

SCK

O

Serial communication clock output (→

ASIC)

78

IC

-

Connect to GND

79

XOUT

O

Main clock oscillation terminal

80

XIN

I

Main clock oscillation terminal (4 MHz)

81

VDD

-

VDD

82

XCIN

I

Sub clock oscillation terminal

83

XCOUT

O

Sub clock oscillation terminal (32.768 kHz)

84

I

Reset input

RESET

85

Battery OFF detection signal

L : OFF

BAT OFF

I

86

RXD

I

RS-232C RXD input terminal

87

I

Serial communication request signal

L : Request

S. REQ

88~90

NOT USED

-

-

91~93

SCAN OUT0~2

O

Key matrix output

94

WAKE UP

O

Wake up signal

H : WAKE UP

95

LCD ON

O

H : ON

LCD monitor power ON/OFF

signal

96

ASIC reset control signal

ASIC TEST 0

O

97

O

ASIC reset signal

L : Reset output

ASIC RESET

98

O

ASIC reset control signal

L : Reset control

ASIC TEST 2

99

AVSS

-

Analog GND

100

BATTERY

I

Battery voltage input (analog input)

Table 4-1. 8-bit Microprocessor Port Specification

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