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UPD70741 Datasheet(PDF) 39 Page - NEC

No. de pieza UPD70741
Descripción Electrónicos  V821TM 32-/16-BIT MICROPROCESSOR
PDF  112 Pages
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Fabricante Electrónico  NEC [NEC]
Página de inicio  http://www.nec.com/
Logo NEC - NEC

UPD70741 Datasheet(HTML) 39 Page - NEC

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µPD70741
39
CSIM
D
Q
SI
SO
SCLK
1
2
/2
φ
φ
INTCSI
CTXE
CRXE SOT MOD
CLS
Internal bus
SO latch
Shift register (SIO)
Serial clock
control circuit
Baud rate generator
Serial clock
counter
Interrupt
control circuit
8.3 Synchronous Serial Interface (CSI)
8.3.1 Features
High-speed transfer 6.25 Mbps maximum (when
φ/2 is used with φ = 25 MHz)
Half-duplex communication
Character length: 8 bits
Switchable between the MSB and LSB to lead data transfer
Allows selection between external serial clock input and internal serial clock output
Three-wire method
SO
: Serial data output
SI
: Serial data input
SCLK : Serial clock I/O pin
One interrupt source
• Interrupt request signal (INTCSI)
Figure 8-2. Block Diagram of Clock Synchronous Serial Interface



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