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UPD70F3116 Datasheet(PDF) 39 Page - NEC

No. de pieza UPD70F3116
Descripción Electrónicos  32-Bit Single-Chip Microcontrollers
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Fabricante Electrónico  NEC [NEC]
Página de inicio  http://www.nec.com/
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UPD70F3116 Datasheet(HTML) 39 Page - NEC

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CHAPTER 2 PIN FUNCTIONS
39
User’s Manual U14492EJ5V0UD
(4) P30 to P37 (Port 3) … I/O
Port 3 is an 8-bit I/O that can be set to input or output in 1-bit units.
Besides functioning as an I/O port, in control mode, P30 to P37 operate as serial interface (UART0 to
UART2) I/O.
An operation mode of port or control mode can be selected for each bit and specified by the port 3 mode
control register (PMC3).
(a) Port mode
P30 to P37 can be set to input or output in 1-bit units using the port 3 mode register (PM3).
(b) Control mode
P30 to P37 can be set to port or control mode in 1-bit units using PMC3.
(i)
TXD0 to TXD2 (Transmit data) … Output
These pins output serial transmit data of UART0 to UART2.
(ii) RXD0 to RXD2 (Receive data) … Input
These pins input serial receive data of UART0 to UART2.
(iii) ASCK1, ASCK2 (Asynchronous serial clock) … I/O
These are UART1 and UART2 serial clock I/O pins.
(5) P40 to P47 (Port 4) … I/O
Port 4 is an 8-bit I/O port in which input or output can be set in 1-bit units.
Besides functioning as an I/O port, in control mode, P40 to P47 operate as serial interface (CSI0, CSI1,
FCAN) I/O.
An operation mode of port or control mode can be selected for each bit and specified by the port 4 mode
control register (PMC4).
(a) Port mode
P40 to P47 can be set to input or output in 1-bit units using the port 4 mode register (PM4).
(b) Control mode
P40 to P47 can be set to port or control mode in 1-bit units using PMC4.
(i)
SO0, SO1 (Serial output) … Output
These pins output CSI0 and CSI1 serial transmit data.
(ii) SI0, SI1 (Serial input) … Input
These pins input CSI0 and CSI1 serial receive data.
(iii) SCK0, SCK1 (Serial clock) … I/O
These are CSI0 and CSI1 serial clock I/O pins.
(iv) CTXD (Transmit data for controller area network) … Output
This pin outputs FCAN serial transmit data.


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