4509 Datasheet, PDF (138/142 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4509 Group
A/D converter characteristcs
(Ta = –20 °C to 85 °C, unless otherwise noted)
Symbol
Parameter
Test conditions
–
–
–
V0T
VFST
–
IADD
TCONV
–
–
–
Resolution
Linearity error
Differential non-linearity error
Zero transition voltage
Full-scale transition voltage
Absolute accuracy
(Quantization error excluded)
A/D operating current (Note 1)
A/D conversion time
Comparator resolution
Comparator error (Note 2)
Comparator comparison time
Ta = 0 °C to 50 °C, 2.2 V ≤ VDD 0 °C 2.7 V
Ta = –20 °C to 85 °C, 2.7 V ≤ VDD ≤ 5.5 V
Ta = 0 °C to 50 °C, 2.2 V ≤ VDD < 2.7 V
Ta = –20 °C to 85 °C, 2.7 V ≤ VDD ≤ 5.5 V
VDD = 2.56 V
VDD = 3.075 V
VDD = 5.12 V
VDD = 2.56 V
VDD = 3.075 V
VDD = 5.12 V
Ta = 0 °C to 50 °C, 2.0 V ≤ VDD < 2.2 V
VDD = 5.0 V
VDD = 3.0 V
f(ADCK) = 334 kHz
f(ADCK) = 123 kHz
f(ADCK) = 61.2 kHz
f(ADCK) = 15.3 kHz
VDD = 2.56 V
VDD = 3.072 V
VDD = 5.12 V
f(ADCK) = 334 kHz
f(ADCK) = 123 kHz
f(ADCK) = 61.2 kHz
f(ADCK) = 15.3 kHz
Min.
0
0
0
2552.5
3064.5
5100
Limits
Typ.
7.5
7.5
10
2560
3072
5110
300
100
Unit
Max.
10
bits
±4.0 LSB
±2.0
±0.9 LSB
±0.9
15
mV
15
20
2567.5 mV
3079.5
5120
±8.0 ^LSB
900
µA
300
31
µs
85
169
676
8
bits
± 15
mV
± 15
± 20
4
µs
11
22
88
Notes 1: When the A/D converter is used, the IADD is included to IDD.
2: As for the error from the logic value in the comparator mode, when the contents of the comparator register is n, the logic value of the comparison
voltage Vref which is generated by the built-in DA converter can be obtained by the following formula.
Logic value of comparison voltage Vref
VDD
Vref = ₂₅₆ ✕ n
n = Value of register AD (n = 0 to 255)
Rev.1.02 2006.12.22 page 138 of 140
REJ03B0147-0102