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UPD17708 Datasheet(PDF) 253 Page - NEC

No. de pieza UPD17708
Descripción Electrónicos  4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM
PDF  356 Pages
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Fabricante Electrónico  NEC [NEC]
Página de inicio  http://www.nec.com/
Logo NEC - NEC

UPD17708 Datasheet(HTML) 253 Page - NEC

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µPD17704, 17705, 17707, 17708, 17709
16.3.8 Operation mode and operation of each part
Tables 16-9 outlines the operations of the 3-wire serial I/O mode.
Table 16-9. Outline of Operation of Serial Interface 1
Operation Mode
3-Wire Serial I/O Mode
Slave operation
Master operation
Item
(SIO1CK1 = SIO1CK0 = 0)
(SIO1CK1 = SIO1CK0 = other than 0)
Status of
P0B2/SCK1
During wait
Wait released
During wait
Wait released
each pin
(SIO1TS = 0)
(SIO1TS = 1)
(SIO1TS = 0)
(SIO1TS = 1)
When P0BBIO2 = 0
When P0BBIO2 = 0
When P0BBIO2 = 0
When P0BBIO2 = 0
Floating
Floating
Floating
Floating
General-purpose
Waits for input of
General-purpose
General-purpose
input port
external clock
input port
input port
When P0BBIO2 = 1
When P0BBIO2 = 1
When P0BBIO2 = 1
When P0BBIO2 = 1
General-purpose
General-purpose
General-purpose
Outputs internal clock
output port
output port
output port
Outputs contents of
Outputs contents
Outputs high level
output latch
of output latch
P0B1/SO1
SIO1HIZ = 0
SIO1HIZ = 1
SIO1HIZ = 0
SIO1HIZ = 1
When P0BBIO1 = 0
When P0BBIO1 = 0
When P0BBIO1 = 0
When P0BBIO1 = 0
Floating
Floating
Floating
Floating
General-purpose
General-purpose
General-purpose
General-purpose
input port
input port
input port
input port
When P0BBIO1 = 1
When P0BBIO1 = 1
When P0BBIO1 = 1
When P0BBIO1 = 1
General-purpose
Outputs data
General-purpose
Outputs data
output port
output port
Outputs contents of
Outputs contents of
output latch
output latch
P0B0/SI1
When P0BBIO0 = 0
Floating
Waits for input of serial data
When P0BBIO0 = 1
General-purpose output port
Outputs contents of output latch
Clock counter
Incremented at rising of SCK1 pin
Operation of
Output
SIO1HIZ = 0
presettable
Not output
shift register 1
SIO1HIZ = 1
Shifted from MSB each time SCK1 pin falls and is output
Input
Shifted from LSB each time SCK1 pin rises and is input.
SI1 pin outputs contents of output latch when P0BBIO0 = 1
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