Renesas M16C FAMILY Bedienungsanleitung PDF herunterladen (Seite 16)

■ Serial Interface

M16C Platform

™

On-chip Peripherals

(SS)

0(CLK)

/ST

)

/SR

)

M16C(M&S)

(SS)

(CLK)

/ST

)

2(TxD3/SRxD3)

(SS)

0(CLK)

1(RXD3/STXD3)

2(TxD3/SRxD3)

Por t 5

IC1

IC2

IC3

IC4

IC5

Por t 5

M16C(M&S)

M16C

SI/0

IEBus

(AVC-LAN)

UART

CAN

RxD

TxD

CTS/RTS

CLK

Data

CLK

Data

RxD

TxD

CTS/RTS

CLK

CLKS

TxD

(SS)

0(CLK)

/ST

)

/SR

)

M16C(S)

(SS)

0(CLK)

/ST

)

/SR

)

UART/Clock-Synchronous Serial I/O

The R32C/100 has nine on-chip UART/clock-synchronous

serial I/O channels

UART Function

In addition to normal UART capabilities, special functions are supported.

Gateway Function

Broad range of communication peripherals

provides gateway functionality.

Gateway Function

Synchronous Serial Communication Unit (SPI compatible)

MCU

CTS/RTS Control Capability to Connect 2 Peripheral ICs

Peripheral IC 1

Peripheral IC 2

(Does not apply to M16C/Tiny.)

Port Port Port

MCU

UART0

UART5

MCU

UART6

MCU

UART7

MCU

UART8

MCU

UART1

MCU

UART2

MCU

UART3

MCU

UART4

R32C

Ports 0 to 4 output slave select signals.

Port 5 is for the sync signal between masters.

SS low-level output selects slave operation.

: Used by master and slave.

: Used only as slave.

M&S

■ I

C Bus Interface

Supported MCUs

Communication control method

Start condition overlap detection

Arbitration lost detection

Slave address match determination

Initial acknowledge generation

Timeout detection function

Max. communication speed

M16C/62P, M16C/64, M32C, R32C/111

Partial software control

No detection

Requires flag to be initialized for each byte

Match determination by software

Generated by software after slave address determined

None

384 kbps

(because the SCL low-duration ≥ 1.3µs

standard is not met at faster speeds)

M16C/63, M16C/65, M16C/Tiny, R8C, R32C/118

Hardware control

Detection supported

Does not require flag to be initialized for each byte

Match determination by hardware, interrupt generated only on match

Automatic processing by hardware

Supported (dedicated timer)

400 kbps

(max. value of I

C Bus standard high-speed mode)

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 45 46

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