7477 datasheet(205/354 Pages) RENESAS

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1.20 Electrical characteristics

7470/7471/7477/7478 GROUP USER’S MANUAL

1.20 Electrical characteristics

1.20.1 Electrical characteristics

(1) 7470 group electrical characteristics

Table 1.20.1 shows the absolute maximum ratings of the 7470 group. Table 1.20.2 shows the

recommended operating conditions. Table 1.20.3 shows the electrical characteristics.

Table 1.20.4 shows the A-D converter characteristics.

Table 1.20.1 Absolute maximum ratings (7470 group)

Unit

°C

Symbol

VCC

Topr

Tstg

Parameter

Power source voltage

Input voltage

Output voltage

Power dissipation

Operating temperature

Storage temperature

Ratings

–0.3 to +7

–0.3 to VCC+0.3

1000

–20 to +85

–40 to +150

Conditions

All voltages are based on VSS.

Output transistors are cut-off.

Ta = 25 °C

Table 1.20.2 Recommended operating conditions (7470 group)

(VCC = 2.7 V to 5.5 V, VSS = 0 V, Ta = –20 °C to +85 °C, unless otherwise noted)

Symbol

Parameter

Unit

Limits

Max.

Typ.

Min.

4.5

2.7

0.8VCC

0.7VCC

0.8VCC

MHz

5.5

4.5

VCC

0.2VCC

0.25VCC

0.16VCC

0.12VCC

–30

–10

–5

2.2VCC–2.0

5.0

Power source voltage

f(XIN) = 8.0 MHz

f(XIN) = (2.2VCC–2.0 )MHz

Power source voltage

“H” input voltage P00 to P07, P10 to P17, P30 to P33

“H” input voltage P20 to P23, P40, P41

_______

“H” input voltage XIN, RESET

“L” input voltage P00 to P07, P10 to P17, P30 to P33

“L” input voltage P20 to P23, P40, P41

“L” input voltage XIN

_______

“L” input voltage RESET

“H” sum output current of P00 to P07 and P40 and P41

“H” sum output current of P10 to P17 and P20 to P23

“L” sum output current of P00 to P07, P40 and P41

“L” sum output current of P10 to P17 and P20 to P23

“H” peak output current

P00 to P07, P10 to P17, P20 to P23, P4 0, P4 1

“L” peak output current

P00 to P07, P10 to P17, P20 to P23, P4 0, P4 1

“H” average output current

P00 to P07, P10 to P17, P20 to P23, P40, P41 (Note 1)

“L” average output current

P00 to P07, P10 to P17, P20 to P23, P40, P41 (Note 1)

Notes

1: The average output current IOH (avg) or IOL (avg) are the average value during a 100 ms.

2: The oscillation frequency is at 50 % duty cycle.

VCC

VSS

VIH

VIL

IOH(sum)

IOL(sum)

IOH(peak)

IOL(peak)

IOH(avg)

IOL(avg)

f(CNTR)

f(CLK)

f(XIN)

f(XIN) = 8 MHz

f(XIN) = 4 MHz

f(XIN) = 8 MHz

f(XIN) = 4 MHz

VCC = 4.5 V to 5.5 V

VCC = 2.7 V to 4.5 V

Timer input frequency

CNTR0 (P32),

CNTR1 (P33) (Note 2)

Serial I/O clock input frequency

CLK (P16) (Note 2)

Clock input oscillation frequency

(Note 2)

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