UPD7759C 查看數據表（PDF） - NEC => Renesas Technology
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UPD7759C Datasheet PDF : 18 Pages
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µPD7759
5 AC CHARACTERISTICS (Ta = –10 to +70 °C, VDD = 2.7 to 5.5 V, fOSC = 640 kHz)
TIMING REQUIREMENTS (common to all modes)
Parameters
BUSY rise time
BUSY fall time
BUSY output stop time
Symbol
Conditions
tr1
CL = 150 pF, VDD = 5 V ± 10 %
tr2
CL = 150 pF, VDD = 2.7 to 5.5 V
tf1
CL = 150 pF, VDD = 5 V ± 10 %
tf2
CL = 150 pF, VDD = 2.7 to 5.5 V
tRB
from RESET ↓
MIN.
TYP.
MAX.
800
2
800
2
9.5
Unit
ns
µs
ns
µs
µs
2.1 STAND ALONE MODE
(1) TIMING REQUIREMENTS
Parameters
Symbol
Conditions
MIN.
RESET pulse width
tRST
18.5
CS set up time
tCS
for ST ↓
0
CS hold time
tSC
from ST ↑
0
5 ST set up time
ST pulse width
Message select code set up time
Message select code hold time
In operation mode, from RESET ↑ 200
tRS
In standby mode, from RESET ↑
1.6
2.7 V <= VDD <= 5.5 V
2
tCC
4.5 V <= VDD <= 5.5 V
350
2.7 V <= VDD <= 5.5 V, from ST ↑
5
tDW
4.5 V <= VDD <= 5.5 V, from ST ↑
350
tWD from ST ↑
0
Speech data set up time
tDR
for DRQ ↓
2
Speech data hold time
tRDH from DRQ ↑
TYP.
MAX.
7.5
1.25
Unit
µs
ns
ns
µs
ms
µs
ns
µs
ns
ns
µs
µs
8
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