E202075_HD404889 Datasheet, PDF (187/202 Pages) Renesas Technology Corp – Low-Voltage AS Microcomputers with On-Chip LCD Circuit

HD404889/HD404899/HD404878/HD404868 Series
AC Characteristics (HD404888, HD4048812, HD404889, HD404898, HD4048912, HD404899,
HD404874, HD404878, HD404864, HD404868: V_CC=1.8V to 5.5V, GND=0V, T_a=–20°C to +75°C;,
HCD404889, HCD404899, HCD404878: V_CC =1.8V to 5.5V, GND=0V, Ta=+75°C; HD4074889,
HD4074899, HD4074869: V_CC=2.0V to 5.5V, GND=0V, T_a=–20°C to +75°C, unless otherwise
specified)
Item
Symbol Pins
min. typ. max. Unit Test conditions
Notes
Clock oscillation
f_OSC
OSC₁, OSC₂
0.4 — 4.5 MHz Division by 4
1
frequency
X1,X2
— 32.768 — kHz
Instruction cycle time
t_cyc
t_subcyc
0.89 — 10 µs
— 244.14 — µs
Division by 4
32 kHz oscillator used,
division by 8
— 122.07 — µs
32 kHz oscillator used,
division by 4
Oscillation settling
t_RC
OSC₁, OSC₂
— — 7.5 ms
2
time(external clock and
ceramic oscillator)
Oscillation settling
t_RC
time(crystal oscillator)
External clock high- t_CPH
level width
OSC₁, OSC₂
X1,X2
OSC₁
— — 30 ms
V_CC=2.0 to 5.5V
2
—— 2
s
T_a=–10 to +60°C
2
105 — — ns
f_OSC=4MHZ
3
External clock low-
t_CPL
level width
OSC₁
105 — — ns
f_OSC=4MHZ
3
External clock rise time t_CPr
OSC₁
— — 20 ns
f_OSC=4MHZ
3
External clock fall time t_CPf
OSC₁
— — 20 ns
f_OSC=4MHZ
3
INT₀ to INT₁,
t_IH
INT₀ to INT₁,
2—
—
t_cyc /t_subcyc
4
EVNB,EVND, WU₀ to
EVNB,EVND, WU₀ to
WU₃ high-level width
WU₃
INT₀ to INT₁,
t_IL
INT₀ to INT₁,
2—
—
t_cyc /t_subcyc
4
EVNB,EVND, WU₀ to
EVNB,EVND, WU₀ to
WU₃ low-level width
WU₃
RESET low-level width t_RSTL
RESET
2—
—
t_cyc
5
RESET rise time
t_RSTr
RESET
— — 20 ms
5
Input capacitance
C_in
All input pins except — — 15 pF
TEST
f=1MHz,V_in=0V
TEST
— — 15 pF
(HD404888, HD4048812,
HD404889, HCD404889,
HD404899, HD404898,
HD4048912,
HCD404899, HD404874,
HD404878, HCD404878,
HD404864, HD404868)
TEST
(HD4074889,
HD4074899,
HD4074869)
— — 40 pF
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