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UPD72001C Datasheet(PDF) 24 Page - NEC

Part # UPD72001C
Description  MULTI-PROTOCOL SERIAL CONTROLLERS
PDF  40 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD72001C Datasheet(HTML) 24 Page - NEC

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µPD72001-11, 72001-A8
24
Communication control:
Parameter
Symbol
Condition
Rated Value
Unit
MIN.
MAX.
Transmit enable command (WR
↑,tDTETD1
ASYNC, COP
3
tCYC
CTS
↓) → TXD delay time
tDTETD2
BOP
4
7
tCYC
Receive enable command (DCD
↓)tSRERC
1tCYC
setup time (vs. start bit, STRXC
↑,
TRXC
↑ of sync character)Note
Receive enable command (DCD
↓)tHRCRE1
ASYNC
7
tCYK
hold time (vs. STRXC
↑, TRXC ↑)Note
tHRCRE2
COP
20 tCYC
+ 8tCYK
tHRCRE3
BOP
3tCYC
+ 8tCYK
Receive clock (STRXC, TRXC)Note
tHRDRC1
ASYNC
1
Bit
hold time (vs. start bit, MSB of CRC,
tHRDRC2
COP
22
tCYC
MSB of end flag)
tHRDRC3
BOP
5
tCYC
Receive clock (STRXC, TRXC)Note
tSRCRD1
ASYNC
1
Bit
setup time (vs. start bit, sync character)
tSRCRD2
COP, BOP
1
tCYC
Note Of STRXC and TRXC, the one used as the receive clock.
Crystal oscillation and reset:
Parameter
Symbol
Condition
Rated Value
Unit
MIN.
MAX.
XI1 input cycle time
tCYX
TA = –10 to +70
°C
125
1000
ns
TA = –40 to +85
°C
140
1000
RESET pulse width
tWRSL
2tCYK
Caution The system clock cycle in all modes must be five times that of the data rate.



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