Tc9457f, I/o ports, Hold , intr input port, reset input – Toshiba TC9457F User Manual

Page 12: A/d converter

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TC9457F

2002-10-21

12

I/O Ports

(P1-0 to P4-3)

Characteristics Symbol

Test

Circuit

Test Condition

Min

Typ.

Max

Unit

High level

I

OH3

V

OH

= 4.5 V

−1

−2

I

OL3

V

OL

= 0.5 V

(exclude P4-1, 2, 3 pin)

1.5 3.0 ―

Output current

Low level

I

OL5

V

OL

= 0.5 V (P4-1, 2, 3 pin)

4

10

mA

Input leakage current

I

LI

V

IH

= 5.0 V, V

IL

= 0 V

― ±1.0

µA

High level

V

IH

MV

DD

× 0.8

~ MV

DD

Input voltage

Low level

V

IL

― 0

~

MV

DD

× 0.2

V

Input pullup/down resistance

R

IN1

(P1-0 to P1-3) When pulldown,
pullup are set.

25 50 120

kΩ

HOLD , INTR Input Port, RESET Input

Characteristics Symbol

Test

Circuit

Test Condition

Min

Typ.

Max

Unit

Input leakage current

I

LI

V

IH

= 5.0 V, V

IL

= 0 V

― ±1.0

µA

High level

V

IH3

MV

DD

× 0.8

~ MV

DD

Input voltage

Low level

V

IL3

― 0

~

MV

DD

× 0.2

V

A/D Converter

(AD

IN1

to AD

IN4

)

Characteristics Symbol

Test

Circuit

Test Condition

Min

Typ.

Max

Unit

Analog input voltage range

V

AD

― AD

IN

to AD

IN4

0

~

MV

DD

V

Resolution V

RES

― 6 ― bit

Overall conversion error

― ±0.5 ±4.0

LSB

Analog input leakage

I

LI

V

IH

= 5.0 V, V

IL

= 0 V

(AD

IN1

to AD

IN4

)

― ±1.0

µA

DATA, SFSY, LRCK, BCK, AOUT, MBOV, IPF Outputs and CLCK Input/Output

Characteristics Symbol

Test

Circuit

Test Condition

Min

Typ.

Max

Unit

High level

I

OH4

V

OH

= 4.5 V

(Settings OT for output,
LEDon = 0)

−2.0

−4.0

Output current

Low level

I

OL5

V

OL

= 0.5 V

(Settings OT for output,
LEDon = 0)

5 10 ―

mA

Input leakage current

I

LI

V

IH

= 5.0 V, V

IL

= 0 V

(CLCK)

― ±1.0

µA

High level

V

IH

― (CLCK)

MV

DD

× 0.8

~ MV

DD

Input voltage

Low level

V

IL

― (CLCK)

0

~ MV

DD

× 0.2

V

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