HD6433644R datasheet(299/549 Pages) RENESAS

299 / 549 page

Section 10 Serial Communication Interface

Rev. 6.00 Sep 12, 2006 page 279 of 526

REJ09B0326-0600

Pin Configuration

Table 10.2 shows the SCI1 pin configuration.

Table 10.2 Pin Configuration

Name

Abbr.

I/O

Function

SCI1 clock pin

SCK1

I/O

SCI1 clock input or output

SCI1 data input pin

SI1

Input

SCI1 receive data input

SCI1 data output pin

SO1

Output

SCI1 transmit data output

Table 10.3 shows the SCI1 register configuration.

Table 10.3 SCI1 Registers

Name

Abbr.

R/W

Initial Value

Address

Serial control register 1

SCR1

R/W

H'00

H'FFA0

Serial control status register 1

SCSR1

R/W

H'9C

H'FFA1

Serial data register U

SDRU

R/W

Undefined

H'FFA2

Serial data register L

SDRL

R/W

Undefined

H'FFA3

10.2.2

Serial Control Register 1 (SCR1)

Bit

SNC1

SNC0

MRKON

LTCH

CKS3

CKS2

CKS1

CKS0

Initial value

Read/Write

R/W

SCR1 is an 8-bit read/write register for selecting the operation mode, the transfer clock source,

and the prescaler division ratio.

Upon reset, SCR1 is initialized to H'00. Writing to this register during a transfer stops the transfer.

HD6433644R Datasheet(PDF) 299 Page - Renesas Technology Corp

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