D75208CW NEC, D75208CW Datasheet - Page 43

• Manufacturer Part Number: D75208CW
• Description: Search -----> UPD75208
• Manufacturer: NEC

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* 1. 2
* 1. The following external circuit is recommended.
POWER-ON RESET CIRCUIT CHARACTERISTICS (MASK OPTION) (Ta = -40 to +85 C)
Remarks
Power-on reset
operating voltage high
Power-on reset
operating voltage low
Power supply voltage
rise time
Power supply voltage
off time
Power-on reset circuit*2
current consumption
2. Current with on-chip power-on reset circuit or power-on flag.
2. Current to the on-chip pull-down resistor and power-on reset circuit (mask option) is not included.
3. When the processor clock control register (PCC) is set to 0011 and is operated in the high-speed mode.
4. When the PCC register is set to 0000 and is operated in the low-speed mode.
5. When the system clock control register (SCC) is set to 1001 and is operated with the subsystem clock with
main system clock oscillation stopped.
PARAMETER
17
/f
XX
Start the power supply smoothly.
(31.3 ms at f
V
DD
XX
= 4.19 MHz)
SYMBOL
V
V
I
DDPR
t
DDH
DDL
t
off
r
PD75208
V
V
LOAD
V
V
V
V
PRE
DD
SS
DD
DD
= 5 V 10 %
= 2.7 V
TEST CONDITIONS
t
off
RD9. 1EL
68 k
RD9. 1EL : Zener Diode (NEC)
t
r
+5 V
–30 V
V
DDL
V
DDH
Zener Voltage = 8.29 to 9.30 V
MIN.
4.5
10
0
1
TYP.
10
2
MAX.
100
6.0
0.2
20
*1
PD75208
UNIT
V
V
s
A
A
s
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