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455A Datasheet, PDF (141/148 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER | |||
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455A Group
Recommended operating conditions
Table 31 Recommended operating conditions 1 (Ta = â20 °C to 85 °C, VDD = 1.8 to 5.5 V, unless otherwise noted)
Symbol
VDD
VDD
VDD
VDD
VRAM
VSS
VLC3
VIH
VIL
IOH(peak)
Parameter
Conditions
Supply voltage
(with a ceramic resonator)
Supply voltage
(when an external clock is
used)
Supply voltage
(when quartz-crystal oscillation
is used)
Supply voltage
(Low-speed/High-speed on-
chip oscillator is used)
RAM back-up voltage
Supply voltage
LCD power supply (Note 1)
âHâ level input voltage
âLâ level input voltage
âHâ level peak output current
f(STCK) ⤠6MHz
f(STCK) ⤠4.4MHz
f(STCK) ⤠2.2MHz
f(STCK) ⤠1.1MHz
f(STCK) ⤠4.8MHz
f(STCK) ⤠3.2MHz
f(STCK) ⤠1.6MHz
f(STCK) ⤠0.8MHz
f(STCK) ⤠50 kHz
(at RAM back-up)
P0, P1, P2, P3, D0âD7
XIN, XCIN
RESET
INT
CNTR
P0, P1, P2, P3, D0âD7
XIN, XCIN
RESET
INT
CNTR
P0, P1, P2, P3, D0âD5
C/CNTR
IOH(avg)
âHâ level average output current P0, P1, P2, P3, D0âD5
(Note 2)
C/CNTR
IOL(peak)
âLâ level peak output current
P0, P1, P2, P3, D0âD7, C/CNTR
RESET
IOL(avg)
âLâ level average output current P0, P1, P2, P3, D0âD7, C/CNTR
(Note 2)
RESET
ΣIOH(avg)
ΣIOL(avg)
âHâ level total average current
âLâ level total average current
P0, C/CNTR
P1, P2, P3, D0âD5
P0, C/CNTR
P1, P2, P3, D0âD7, RESET
Note 1. At 1/2 bias: VLC1 = VLC2 = (1/2)â¢VLC3
At 1/3 bias: VLC1 = (1/3)â¢VLC3, VLC2 = (2/3)â¢VLC3
Note 2. The average output current is the average value during 100ms.
VDD = 5V
VDD = 3V
VDD = 5V
VDD = 3V
VDD = 5V
VDD = 3V
VDD = 5V
VDD = 3V
VDD = 5V
VDD = 3V
VDD = 5V
VDD = 3V
VDD = 5V
VDD = 3V
VDD = 5V
VDD = 3V
Limits
Unit
Min. Typ. Max.
4
5.5
V
2.7
5.5
2
5.5
1.8
5.5
4
5.5
V
2.7
5.5
2
5.5
1.8
5.5
1.8
5.5
V
1.8
5.5
V
1.6
0
1.8
0.8VDD
0.7VDD
0.85VDD
5.5
V
V
VDD
V
VDD
V
VDD
VDD
0.85VDD
VDD
0.8VDD
0
0
0
VDD
0.2VDD V
0.3VDD
0.3VDD
0
0.15VDD
0
0.15VDD
â20 mA
â10
â30
â15
â10 mA
â5
â20
â10
24 mA
12
10
4
15 mA
7
5
2
â40 mA
â40
40 mA
40
Rev.1.01 Feb 15, 2008 Page 141 of 146
REJ03B0224-0101
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