M16CSLASH62 datasheet(150/621 Pages) RENESAS

150 / 621 page

Clock asynchronous serial I/O (UART) mode

Mitsubishi microcomputers

M16C / 62 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

135

• Example of receive timing when transfer data is 8 bits long (parity disabled, one stop bit)

Figure 1.19.18. Typical receive timing in UART mode

_______ _______

(a) Separate CTS/RTS pins function (UART0)

_______ _______

_______

Setting the CTS/RTS separate bit (bit 6 of address 03B016) to "1" inputs/outputs the CTS signal and

_______

_______ _______

RTS signal from different pins. Choose which to use, CTS or RTS, by use of the CTS/RTS function

select bit (bit 2 of address 03A416). This function is effective in UART0 only. With this function cho-

_______ _______

sen, the user cannot use the CTS/RTS function. Set "0" both to the CTS/RTS function select bit (bit

_______ _______

2 of address 03AC16) and to the CTS/RTS disable bit (bit 4 of address 03AC16).

(b) Sleep mode (UART0, UART1)

This mode is used to transfer data between specific microcomputers among multiple microcomputers

connected using UARTi. The sleep mode is selected when the sleep select bit (bit 7 at addresses

03A016, 03A816) is set to “1” during reception. In this mode, the unit performs receive operation when

the MSB of the received data = “1” and does not perform receive operation when the MSB = “0”.

Start bit

Sampled “L”

Receive data taken in

BRGi count

source

Receive enable bit

RxDi

Transfer clock

Receive

complete flag

RTSi

Stop bit

“1”

“0”

“1”

“H”

“L”

The above timing applies to the following settings :

•Parity is disabled.

•One stop bit.

•RTS function is selected.

Receive interrupt

request bit

“0”

“1”

Transferred from UARTi receive register to

UARTi receive buffer register

Reception triggered when transfer clock

is generated by falling edge of start bit

Cleared to “0” when interrupt request is accepted, or cleared by software

_______ _______

Figure 1.19.19. The separate CTS/RTS pins function usage

Microcomputer

TXD0 (P63)

RXD0 (P62)

OUT

CTS

RTS

CTS0 (P64)

RTS0 (P60)

Note : The user cannot use CTS and RTS at the same time.

M16C/62 bảng dữ liệu(PDF) 150 Page - Renesas Technology Corp

M16C/62 bảng dữ liệu(HTML) 150 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

bảng dữ liệu tải về

Link URL