M16C62_N Datasheet, PDF(140/621 Page) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

M16C62_N Datasheet, PDF (140/621 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY

◁

Clock synchronous serial I/O mode

Mitsubishi microcomputers

M16C / 62 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Table 1.19.4 lists the functions of the input/output pins during clock synchronous serial I/O mode. This

_______

table shows the pin functions when the transfer clock output from multiple pins and the separate CTS/

_______

RTS pins functions are not selected. Note that for a period from when the UARTi operation mode is

selected to when transfer starts, the TxDi pin outputs a âHâ. (If the N-channel open-drain is selected, this

pin is in floating state.)

Table 1.19.4. Input/output pin functions in clock synchronous serial I/O mode

Pin name

Function

Method of selection

TxDi

Serial data output

(P63, P67, P70)

(Outputs dummy data when performing reception only)

RxDi

Serial data input

(P62, P66, P71)

Port P62, P66 and P71 direction register (bits 2 and 6 at address 03EE16,

bit 1 at address 03EF16)= â0â

(Can be used as an input port when performing transmission only)

CLKi

Transfer clock output

(P61, P65, P72)

Transfer clock input

Internal/external clock select bit (bit 3 at address 03A016, 03A816, 037816) = â0â

Internal/external clock select bit (bit 3 at address 03A016, 03A816, 037816) = â1â

Port P61, P65 and P72 direction register (bits 1 and 5 at address 03EE16,

bit 2 at address 03EF16) = â0â

CTSi/RTSi CTS input

(P60, P64, P73)

CTS/RTS disable bit (bit 4 at address 03A416, 03AC16, 037C16) =â0â

CTS/RTS function select bit (bit 2 at address 03A416, 03AC16, 037C16) = â0â

Port P60, P64 and P73 direction register (bits 0 and 4 at address 03EE16,

bit 3 at address 03EF16) = â0â

RTS output

CTS/RTS disable bit (bit 4 at address 03A416, 03AC16, 037C16) = â0â

CTS/RTS function select bit (bit 2 at address 03A416, 03AC16, 037C16) = â1â

Programmable I/O port CTS/RTS disable bit (bit 4 at address 03A416, 03AC16, 037C16) = â1â

_______ _______

(when transfer clock output from multiple pins and separate CTS/RTS pins functions are not selected)

125

▷