HD6433644R datasheet(326/549 Pages) RENESAS

Part #	HD6433644R

Description	8-Bit Single-Chip Microcomputer

PDF	549 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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Section 10 Serial Communication Interface

Rev. 6.00 Sep 12, 2006 page 306 of 526

REJ09B0326-0600

Notes: 1. The setting should be made so that the error is not more than 1%.

2. The value set in BRR is given by the following equation:

N =

× 106 – 1

OSC

(64

× 22n × B)

where

Bit rate (bit/s)

Baud rate generator BRR setting (0 ≤ N ≤ 255)

OSC: Value of

φOSC (MHz)

Baud rate generator input clock number (n = 0, 1, 2, or 3)

(The relation between n and the clock is shown in table 10.7.)

Table 10.7 Relation between n and Clock

SMR Setting

Clock

CKS1

CKS0

φ/4

φ16

φ/64

3. The error in table 10.6 is the value obtained from the following equation, rounded to

two decimal places.

B (rate obtained from n, N, OSC) – R (bit rate in left-hand column in table 10.6)

R (bit rate in left-hand column in table 10.6)

Error (%) =

× 100

HD6433644R Datasheet(PDF) 326 Page - Renesas Technology Corp