7470/7471/7477/7478 GROUP USER’S MANUAL
HARDWARE
1.20 Electrical characteristics
1-197
Note : The rating is 500 mW for the 56P6N-A package product.
Table 1.20.14 Recommended operating conditions (7478 group)
(VCC = 2.7 V to 5.5 V, VSS = AVSS = 0 V, Ta = –20 °C to +85 °C, unless otherwise noted)
(4) 7478 group electrical characteristics
Table 1.20.13 shows the absolute maximum ratings of the 7478 group. Table 1.20.14 shows the
recommended operating conditions. Table 1.20.15 shows the electrical characteristics.
Table 1.20.16 shows the A-D converter characteristics.
Table 1.20.13 Absolute maximum ratings (7478 group)
Unit
V
mW
°C
Symbol
VCC
VI
VO
Pd
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 (Note)
–20 to +85
–40 to +150
Conditions
All voltages are based on VSS.
Output transistors are cut-off.
Ta = 25 °C
f(XIN) = 8 MHz
f(XIN) = 4 MHz
Symbol
Unit
Limits
Max.
Typ.
Min.
4.5
2.7
0.8VCC
0.7VCC
0.8VCC
0
V
mA
MHz
kHz
MHz
kHz
5.5
4.5
VCC
0.2VCC
0.25VCC
0.16VCC
0.12VCC
–30
60
–10
20
–5
10
2
1
500
250
2
1
8
2.2VCC–2.0
50
5.0
0
32
Power surce voltage
f(XIN) = 8.0 MHz
f(XIN) =(2.2VCC–2.0) MHz
Power surce voltage
Analog supply voltage
“H” input voltage P00 to P07, P10 to P17, P30 to P33
“H” input voltage P20 to P27, P40 to P43, P50 to P53 (Note 1)
_______
“H” input voltage XIN, RESET
“L” input voltage P00 to P07, P10 to P17, P30 to P33
“L” input voltage P20 to P27, P40 to P43, P50 to P53 (Note 1)
“L” input voltage XIN
_______
“L” input voltage RESET
“H” sum output current of P00 to P07 and P40 to P43
“H” sum output current of P10 to P17
“L” sum output current of P00 to P07 and P40 toP43
“L” sum output current of P10 to P17
“H” peak output current
P00 to P07, P1 0 to P17, P40 to P43
“L” peak output current
P00 to P07, P1 0 to P17, P40 to P43
“H” average output current
P00 to P07, P1 0 to P17, P40 to P43 (Note 2)
“L” average output current
P00 to P07, P1 0 to P17, P40 to P43 (Note 2)
VCC
VSS
AVSS
VIH
VIL
IOH(sum)
IOL(sum)
IOH(peak)
IOL(peak)
IOH(avg)
IOL(avg)
f(CNTR)
f(SCLK)
f(XIN)
f(XCIN)
Notes 1: Except when P50 is used as XCIN.
2: The average output current IOH (avg) and IOL (avg) are the average value during a 100 ms.
3: The oscillation frequency is at 50 % duty cycle.
4: Set f(XCIN) < f(XIN)/3 when the sub-clock is used.
f(X IN) = 8 MHz
f(X IN) = 4 MHz
f(X IN) = 8 MHz
f(X IN) = 4 MHz
Parameter
Timer input frequency
CNTR0 (P32), CNTR1 (P33) (Note 3)
Serial I/O clock input frequency
SCLK (P16) (Note 3)
Clock input oscillation frequency
(Note 3)
VCC = 4.5 V to 5.5 V
VCC = 2.7 V to 4.5 V
Use as clock synchro-
nous serial I/O mode
Use as
UART
mode
Sub-clock input oscillation frequency (Notes 3, 4)