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UPD7759C Datasheet(PDF) 8 Page - NEC

Part # UPD7759C
Description  ADPCM SPEECH SYNTHESIZER LSIs
PDF  18 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD7759C Datasheet(HTML) 8 Page - NEC

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µPD7759
8
AC CHARACTERISTICS (Ta = –10 to +70
°C, VDD = 2.7 to 5.5 V, fOSC = 640 kHz)
TIMING REQUIREMENTS (common to all modes)
Parameters
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
tr1
CL = 150 pF, VDD = 5 V
± 10 %
800
ns
BUSY rise time
tr2
CL = 150 pF, VDD = 2.7 to 5.5 V
2
µs
tf1
CL = 150 pF, VDD = 5 V
± 10 %
800
ns
BUSY fall time
tf2
CL = 150 pF, VDD = 2.7 to 5.5 V
2
µs
BUSY output stop time
tRB
from RESET
↓
9.5
µs
2.1 STAND ALONE MODE
(1)
TIMING REQUIREMENTS
Parameters
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
RESET pulse width
tRST
18.5
µs
CS set up time
tCS
for ST
↓
0ns
CS hold time
tSC
from ST
↑
0ns
In operation mode, from RESET
↑
200
µs
ST set up time
tRS
In standby mode, from RESET
↑
1.6
ms
2.7 V
VDD
5.5 V
2
µs
ST pulse width
tCC
4.5 V
VDD
5.5 V
350
ns
2.7 V
VDD
5.5 V, from ST
↑
5
µs
Message select code set up time
tDW
4.5 V
VDD
5.5 V, from ST
↑
350
ns
Message select code hold time
tWD
from ST
↑
0ns
Speech data set up time
tDR
for DRQ
↓
2
7.5
µs
Speech data hold time
tRDH
from DRQ
↑
1.25
µs
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