UPD75238 Datasheet, PDF (173/190 Pages) NEC – 4 BIT SINGLE-CHIP MICROCOMPUTER

µPD75238
DC CHARACTERISTICS (Ta = -40 to +85 °C, VDD = 2.7 to 6.0 V)
Parameter
Power supply
current ^{Note 1}
Symbol
IDD1
Min.
IDD2
IDD1
IDD2
IDD3
IDD4
IDD5
Typ.
4.5
0.6
600
200
3
0.5
600
200
40
5
0.5
0.3
Max.
13.5
1.8
1800
600
9
1.5
1800
600
120
15
20
10
5
Unit
mA
mA
µA
µA
mA
mA
µA
µA
µA
µA
µA
µA
µA
Conditions
6.0 MHz
Operation VDD = 5 V ±10 %^{Note 2}
crystal
mode
resonance
C1 = C2
HALT
= 22 pF^{Note 4 mode}
VDD = 3 V ±10 %^{Note 3}
VDD = 5 V ±10 %
VDD = 3 V ±10 %
4.19 MHz Operation VDD = 5 V ±10 %^{Note 2}
crystal
mode
resonance
C1 = C2
HALT
= 22 pF^{Note 4 mode}
VDD = 3 V ±10 %^{Note 3}
VDD = 5 V ±10 %
VDD = 3 V ±10 %
32 kHz^{Note 5} Operation VDD = 3 V ±10 %
crystal
mode
resonance
HALT
VDD = 3 V ±10 %
mode
XT1 = 0 V
STOP mode
VDD = 5 V ±10 %
VDD =
3 V ±10 %
Ta = 25 ˚C
Notes 1. This current excludes the current which flows through the built-in pull-down or pull-up resistors.
2. Value when the processor clock control register (PCC) is set to 0011 and the µPD75238 is operated
in the high-speed mode
3. Value when the PCC is set to 0000 and the µPD75238 is operated in the low-speed mode
4. This value applies also when the subsystem clock oscillates.
5. This value applies when the system clock control resistor (SCC) is set to 1001 to stop the main
system clock pulse and to start the subsystem clock pulse.
A/D CONVERTER CHARACTERISTICS (Ta = -40 to +85 °C, VDD = 2.7 to 6.0 V, AVSS = VSS = 0 V, AVDD = VDD)
Parameter
Symbol Min. Typ. Max. Unit
Conditions
Resolution
8
8
8
bit
Absolute accuracy^{Note 1}
±1.5 LSB 2.5 V ≤ AVREF ≤ AVDD -10 ≤ Ta ≤ +85 °C
5
±2.0
-40 ≤ Ta < -10 °C
Conversion time
tCONV
168/fX µs
Note 2
Sampling time
tSAMP
44/fX
µs
Note 3
Analog input voltage
VIAN
AVSS
AVREF
V
Analog input impedance RAN
1000
MΩ
AVREF current
IAREF
1.0
2.0 mA
Notes 1.
2.
3.
Absolute accuracy excluding quantization error (±1/2 LSB)
Time from the execution of a conversion start instruction till EOC = 1
(28.0 µs at fX = 6.0 MHz, 40.1 µs at fX = 4.19 MHz)
Time from the execution of a conversion start instruction till the end of sampling
(7.33 µs at fX = 6.0 MHz, 10.5 µs at fX = 4.19 MHz)
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