4502 Datasheet, PDF (108/116 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4502 Group
A/D converter recommended operating conditions
(Comparator mode included, Ta = –20 °C to 85 °C, unless otherwise noted)
Symbol
Parameter
VDD
Supply voltage
Ta = 25 °C
Conditions
Min.
2.7 (Note)
Ta = –20 °C to 85 °C
3.0
VIA
Analog input voltage
0
f(XIN) Oscillation frequency
VDD = 2.7 to 5.5 V High-speed mode
0.1
Middle-speed mode
0.2
Low-speed mode
0.4
Default mode
0.8
Note: System is in the reset state when the value is the detection voltage of the voltage drop detection circuit or less.
Limits
Typ.
Max.
5.5
5.5
VDD+2LSB
Unit
V
V
V
MHz
MHz
MHz
MHz
A/D converter characteristcs
(Comparator mode included, 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
A/D operating current (Note 1)
A/D conversion time
Comparator resolution
Comparator error (Note 2)
Comparator comparison time
Ta = 25 °C, VDD = 2.7 to 5.5 V
Ta = –25 °C to 85 °C, VDD = 3.0 V to 5.5 V
Ta = 25 °C, VDD = 2.7 to 5.5 V
Ta = –25 °C to 85 °C, VDD = 3.0 V to 5.5 V
VDD = 5.12 V
VDD = 5.12 V
VDD = 5.0 V
f(XIN) = 0.4 MHz to 4.0 MHz
f(XIN) = 4.0 MHz High-speed mode
Middle-speed mode
Low-speed mode
Default mode
Comparator mode
VDD = 5.12 V
f(XIN) = 4.0 MHz High-speed mode
Middle-speed mode
Low-speed mode
Default mode
Min.
10
5115
Limits
Typ.
20
5125
0.3
Unit
Max.
10
bits
±2.0 LSB
±0.9 LSB
30
mV
5135 mV
0.9
mA
46.5
µs
93.0
186
372
8
bits
±20
mV
6.0
µs
12
24
48
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 =
✕n
256
n = Value of register AD (n = 0 to 255)
Rev.3.01 2005.02.02 page 108 of 112
REJ03B0105-0301