UPD75216ACW

Manufacturer Part NumberUPD75216ACW
Description4-BIT SINGLE-CHIP MICROCOMPUTER
ManufacturerNEC
UPD75216ACW datasheet
 


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Page 52/72

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* 1. The following external circuit is recommended.
PD75216A
V
DD
V
PRE
V
LOAD
V
SS
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.
POWER-ON RESET CIRCUIT CHARACTERISTICS (MASK OPTION) (Ta = –40 to +85 C)
PARAMETER
SYMBOL
Power-on reset
V
DDH
operating voltage high
Power-on reset
V
DDL
operating voltage low
Power supply voltage
t
r
rise time
Power supply voltage
t
off
off time
Power-on reset circuit*2
I
DDPR
current consumption
17
* 1. 2
/f
(31.3 ms at f
= 4.19 MHz)
XX
XX
2. Current with on-chip power-on reset circuit or power-on flag.
V
DD
Remarks
Start the power supply smoothly.
52
+5 V
RD9, 1EL
RD9, 1EL :Zener Diode (NEC)
Zener Voltage = 8.29 to 9.30 V
68 k
–30 V
TEST CONDITIONS
V
= 5 V 10 %
DD
V
= 2.7 V
DD
t
off
t
r
PD75216A
MIN.
TYP.
MAX.
UNIT
6.0
V
4.5
0.2
V
0
*1
s
10
1
s
10
100
A
2
20
A
V
DDH
V
DDL