CF1156 series

NIPPON PRECISION CIRCUITS INC.—2

PAD DESCRIPTION

SPECIFICATIONS

Absolute Maximum Ratings

Electrical Characteristics

Name

Function

OSH, LH

Melody mode control inputs. Built-in pull-down resistors mean LOW-level signals are obtained when inputs are open circuit. The

resistance of the pull-down resistor varies with the applied voltage, as described in the Electrical Characteristics.

LO

LED drive output, HIGH level during non-play mode.

BO

Piezoelectric speaker driver output. LOW level output during non-play mode and during musical rest notes. HIGH level output

during gaps between melody notes.

VDD

VSS

Ground

T1, T2, TC

Test inputs. Pull-down resistor built-in.

TO

Test output. The oscillator frequency (typ. 50kHz) is output for monitoring purposes.

Parameter

Symbol

Condition

Rating

Unit

Supply voltage range

−0.3 to 5.0

V

Input voltage range

V

Operating temperature range

−20 to 80

°C

Storage temperature range

−65 to 150

°C

Parameter

Symbol

Condition

Rating

Unit

min

typ

max

Operating voltage

2.0

3.0

3.6

V

1. Measurement circuit

Non-play mode

–

0.01

0.6

µA

Melody modes: BO, LO open

–

100

200

µA

LH, OSH LOW-level input voltage

––

V

LH, OSH HIGH-level input voltage

–

–

V

LH, OSH LOW-level input current

0.7

9.0

18

µA

LH, OSH HIGH-level input current

0.7

9.0

18

µA

BO LOW-level output current

4.0

–

–

mA

BO HIGH-level output current

4.0

–

–

mA

LO LOW-level output current

10

–

–

mA

LO HIGH-level output current

8

–

–

mA

TO oscillator frequency

35

50

65

kHz

TO oscillator start voltage

–

–

2.0

V

TO oscillator stop voltage

–

–

2.0

V

VDD

VSS

A

3.0V

2. Measurement circuit

VDD

LH

VSS

A

3.0V