參數(shù)資料
型號: UPD7759C
廠商: NEC Corp.
英文描述: ADPCM SPEECH SYNTHESIZER LSIs
中文描述: 差分PcM語音合成器大規(guī)模集成電路
文件頁數(shù): 8/18頁
文件大?。?/td> 183K
代理商: UPD7759C
μ
PD7759
8
AC CHARACTERISTICS (Ta = –10 to +70
°
C, V
DD
= 2.7 to 5.5 V, f
OSC
= 640 kHz)
TIMING REQUIREMENTS (common to all modes)
Parameters
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
t
r1
C
L
= 150 pF, V
DD
= 5 V
±
10 %
800
ns
BUSY rise time
t
r2
C
L
= 150 pF, V
DD
= 2.7 to 5.5 V
2
μ
s
t
f1
C
L
= 150 pF, V
DD
= 5 V
±
10 %
800
ns
BUSY fall time
t
f2
C
L
= 150 pF, V
DD
= 2.7 to 5.5 V
2
μ
s
BUSY output stop time
t
RB
from RESET
9.5
μ
s
2.1 STAND ALONE MODE
(1)
TIMING REQUIREMENTS
Parameters
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
RESET pulse width
t
RST
18.5
μ
s
CS set up time
t
CS
for ST
0
ns
CS hold time
t
SC
from ST
0
ns
In operation mode, from RESET
200
μ
s
ST set up time
t
RS
In standby mode, from RESET
1.6
ms
2.7 V<
DD
<
2
μ
s
ST pulse width
t
CC
4.5 V <
DD
<
350
ns
2.7 V <
DD
<
5
μ
s
Message select code set up time
t
DW
4.5 V <
DD
<
350
ns
Message select code hold time
t
WD
from ST
0
ns
Speech data set up time
t
DR
for DRQ
2
7.5
μ
s
Speech data hold time
t
RDH
from DRQ
1.25
μ
s
#
#
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