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3850 датащи(PDF) 29 Page - Renesas Technology Corp

номер детали 3850
подробное описание детали  8-BIT SINGLE-CHIP MICROCOMPUTER
PDF  261 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

3850 датащи(HTML) 29 Page - Renesas Technology Corp

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1-14
3850/3851 Group User’s Manual
HARDWARE
Fig. 10 Port block diagram (1)
(1) Port P0, P1
Direction
register
Data bus
Port latch
(2) Port P20
Port XC switch bit
Oscillator
Port P21
Data bus
Port latch
Direction
register
Port XC switch bit
(3) Port P21
Port XC switch bit
Data bus
Port latch
Direction
register
Sub-clock generating circuit input
(4) Port P22
Data bus
Port latch
Direction
register
SDA output
I C-BUS interface enable bit
SDA/SCL pin selection bit
SDA input
2
(5) Port P23
Data bus
Port latch
Direction
register
SCL output
I C-BUS interface enable bit
SDA/SCL pin selection bit
SCL input
2
(6) Port P24
Data bus
Port latch
Direction
register
SDA output
Serial I/O enable bit
Receive enable bit
I C-BUS interface enable bit
SDA/SCL pin selection bit
2
SDA input
Serial I/O input
(7) Port P25
Data bus
Port latch
Direction
register
SCL output
I C bus interface enable bit
SDA/SCL pin selection bit
Serial I/O enable bit
Transmit enable bit
2
SCL input
Serial I/O output
P-channel output disable bit
(8) Port P26
Data bus
Port latch
Direction
register
Serial clock output
Serial I/O mode selection bit
Serial I/O enable bit
Serial I/O enable bit
Serial I/O clock selection bit
External clock input
FUNCTIONAL DESCRIPTION



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