UPD75518 NEC, UPD75518 Datasheet - Page 121

• Manufacturer Part Number: UPD75518
• Description: 4 BIT SINGLE-CHIP MICROCOMPUTER
• Manufacturer: NEC

Time elapsed before
A /D conversion starts
(Maximum of 2
SA register
Note 28.0 s (for f
Fig. 4-60 shows the relationship between analog input voltages and 8-bit digital data obtained by A/D
conversion.
Fig. 4-60 Relationship (Ideal) between Analog Input Voltages and Results of A/D Conversion
SOC
EOC
4
/f
X
s)
Previous data
FDH
FEH
FFH
03H
02H
01H
00H
X
= 6.0 MHz) or 40.1 s (for f
0
Fig. 4-59 Timing Chart of A/D Conversion
——
256
1
Sampling time
——
256
2
168/f
Analog input voltage (V)
——
256
X
A /D conversion
3
s
Note
X
= 4.19 MHz)
Undefined
——
253
256
——
254
256
——
255
256
1 ( AV
REF
)
PD75518(A)
Result of conversion
121