M306V2EEFS datasheet(124/271 Pages) RENESAS

124 / 271 page

Rev.1.40

Oct 06, 2004 page 124 of 269

M306V2ME-XXXFP, M306V2EEFP

Item

Specification

Transfer data format

• Transfer data 8-bit UART mode (bit 2 through bit 0 of address 037816 = “1012”)

• One stop bit (bit 4 of address 037816 = “0”)

• With the direct format chosen

Set parity to “even” (bit 5 and bit 6 of address 037816 = “1” and “1” respectively)

Set data logic to “direct” (bit 6 of address 037D16 = “0”).

Set transfer format to LSB (bit 7 of address 037C16 = “0”).

• With the inverse format chosen

Set parity to “odd” (bit 5 and bit 6 of address 037816 = “0” and “1” respectively)

Set data logic to “inverse” (bit 6 of address 037D16 = “1”)

Set transfer format to MSB (bit 7 of address 037C16 = “1”)

Transfer clock

• With the internal clock chosen (bit 3 of address 037816 = “0”) :

fi / 16 (n + 1) (Note 1) : fi=f1, f8, f32

• With an external clock chosen (bit 3 of address 037816 = “1”) :

fEXT / 16 (n+1) (Note 1) (Note 2)

Transmission / reception control

_______

• Disable the CTS and RTS function (bit 4 of address 037C16 = “1”)

Other settings

• The sleep mode select function is not available for UART2

• Set transmission interrupt factor to “transmission completed”

(bit 4 of address 037D16 = “1”)

Transmission start condition • To start transmission, the following requirements must be met:

- Transmit enable bit (bit 0 of address 037D16) = “1”

- Transmit buffer empty flag (bit 1 of address 037D16) = “0”

Reception start condition • To start reception, the following requirements must be met:

- Reception enable bit (bit 2 of address 037D16) = “1”

- Detection of a start bit

Interrupt request

• When transmitting

generation timing

When data transmission from the UART2 transfer register is completed

(bit 4 of address 037D16 = “1”)

• When receiving

When data transfer from the UART2 receive register to the UART2 receive

buffer register is completed

2.11.4 Clock-asynchronous Serial I/O Mode (Compliant with the SIM Interface)

The SIM interface is used for connecting the microcomputer with a memory card I/C or the like; adding

some extra settings in UART2 clock-asynchronous serial I/O mode allows the user to effect this function.

Tables 2.11.8 and 2.11.9 show the specifications of clock-asynchronous serial I/O mode (compliant with

the SIM interface).

Table 2.11.8 Specifications of clock-asynchronous serial I/O mode (compliant with the SIM

interface) (1)

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