3819 datasheet(71/218 Pages) RENESAS

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3819 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

ZERO CROSS DETECTION INPUT CHARACTERISTICS

(VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = –10 to 85°C, unless otherwise noted)

Symbol

fZCR

∆VT

Parameter

Input frequency of zero cross detection

Voltage error of zero cross detection distinction

Test conditions

50 Hz or 60 Hz

Limits

Min.

–100

Typ.

50, 60

Max.

1000

100

Unit

A-D CONVERTER CHARACTERISTICS

(VCC = 4.0 to 5.5 V, VSS = 0 V, Ta = –10 to 85°C, high-speed operation mode f(XIN) = 500 kHz to 8.4 MHz, unless otherwise noted)

Symbol

–

TCONV

IVREF

IIA

RLADDER

Parameter

Resolution

Absolute accuracy (excluding quantization error)

Conversion time

Reference power source input current

Analog port input current

Ladder resistor

Test conditions

VCC = VREF = 5.12 V

VREF = 5 V

Limits

Min.

Max.

±2.5

200

5.0

Unit

Bits

LSB

tc (

φ)

µA

Ω

Typ.

±1

150

0.5

D-A CONVERTER CHARACTERISTICS

(VCC = 4.0 to 5.5 V, VSS = AVSS = 0 V, VREF = 3.0 to VCC, Ta = –10 to 85°C, unless otherwise noted)

Symbol

–

Tsu

IVREF

Parameter

Resolution

Absolute accuracy

Setting time

Output resistor

Reference power source input current (Note)

Test conditions

Limits

Min.

Max.

1.0

2.5

3.2

Unit

Bits

µs

Ω

Typ.

2.5

VCC = 4.0 to 5.5 V

VCC = 3.0 to 5.5 V

Note : Exclude currents flowing through the A-D converter ladder resistor

Fig. 52 Zero cross detection input characteristics

100V AC

P45/INT1/ZCR

clamp correction

input waveform

Zero cross detection

comparator output

5.7 V

0 V

– 0.7 V

1/fZCR

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