4509 Datasheet, PDF (137/142 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4509 Group
A/D converter recommended operating conditions
(Comparator mode included, Ta = –20 °C to 85 °C, unless otherwise noted)
Symbol
Parameter
Conditions
VDD
Supply voltage
VIA
Analog input voltage
f(ADCK) A/D clock frequency (Note)
Ta = 0 °C to 50 °C
Ta = –20 °C to 85 °C
VDD = 4.0 V to 5.5 V
VDD = 2.7 V to 5.5 V
VDD = 2.2 V to 5.5 V
VDD = 2.0 V to 5.5 V
Note: Definition of A/D conversion clock (ADCK)
Limits
Unit
Min.
Typ.
Max.
2.0
5.5
V
2.7
5.5
0
VDD
V
0.8
334
kHz
0.8
123
0.8
61.2
0.8
15.3
Division circuit ^{MR3, MR2}
System clock (STCK)
11
Divided by 8
Instruction clock (INSTCK)
10
On-chip oscillator
MR0
Divided by 4
01
Internal clock
generating circuit
A/D clock
generating circuit
A/D conversion
clock (ADCK)
Ceramic resonance
1
Divided by 2
00
(divided by 3)
(divided by 6)
XIN
RC oscillation
Multi-
0
plexer
f(ADCK)
[kHz]
334
123
61.2
15.3
0.8
A/D clock
recommended
operating condition
2 2.2 2.7
4
5.5 _VDD
[V]
A/D clock (ADCK) operating condition map
Rev.1.02 2006.12.22 page 137 of 140
REJ03B0147-0102