ymf781 Yamatake Corporation, ymf781 Datasheet - Page 8

• Manufacturer Part Number: ymf781
• Description: Apl-1 Automobile Sound Player-1
• Manufacturer: Yamatake Corporation

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8
AC Characteristics
・Reset and Clock Timing
Conditions: T
RSTN, XI, and other input signals
Input/Output level measurement conditions: V
RSTN “L” pulse width
RSTN (undefined→L) set-up time
VDD→VDDC power up time difference
XI Frequency
XI Rising time and Falling time
XI High time
XI Low time
XI Input delay time
XI Input time
Internal clock frequency
Input signals except XI Rising time and Falling time
（unless otherwise specified）
VDDC
RSTN
VDD
・Clock input to the XI terminal is necessary during the reset.
・Be sure to power VDD first when independent power supply is used for the supply of VDD and VDDC.
(When in power-up and in shut-down-cancel）
(When power supply and clock is in stable)
XI
The reset width is defined from a point that VDDC reaches to the minimum of recommended operating voltage.
RSTN input must be "L" level at the point where VDD reaches to 50%.
OP
= -40 to 85℃, VDD= 3.0 to 3.6V, VDDC= 3.0 to 3.6V or 4.75 to 5.25V, Capacitor load=50pF
The minimum of
recommended
operating voltage.
50%
T
RSTS
Ｉtem
50%
T
T
XIIN
VSKW
V
V
V
IH
IL
OH
OL
＝ 0.25 × VDD or 0.25 × VDDC
＝ 0.75 × VDD or 0.75 × VDDC
＝ 0.25 × VDD or 0.25 × VDDC
＝ 0.75 × VDD or 0.75 × VDDC
T
RSTW
T
XIINW
1 / T
T
Symbol
T
T
T
XR
1/T
T
T
T
T
T
VSKW
XIINW
RSTW
R,
RSTS
XIIN
XFREQ
XH
XL
, T
CW
T
F
XF
Ｍin.
100
20
60
60
0
0
1
V
IL
= 0.25*VDD
18.432
Ｔyp.
6.144
YMF781
Ｍax.
20
15
3
1
Ｕnit
MHz
MHz
μs
μs
ms
ms
ms
ms
ns
ns
ns
ns