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H8/3021 数据表(PDF) 9 Page - Renesas Technology Corp

部件名 H8/3021
功能描述  16-Bit Single-Chip Microcomputer
PDF  712 Pages
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制造商  RENESAS [Renesas Technology Corp]
网页  http://www.renesas.com
标志 RENESAS - Renesas Technology Corp

H8/3021 数据表(HTML) 9 Page - Renesas Technology Corp

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Rev.2.00 Mar. 22, 2007 Page ix of xxiv
REJ09B0352-0200
Item
Page
Revision (See Manual for Details)
11.2.8 Bit Rate
Register (BRR)
350
Description amended
The CPU can always read and write BRR. BRR is initialized to
H'FF by a reset and in standby mode.
The baud rate generator is controlled separately for the
individual channels, so different values may be set for each.
Table 11.3 shows examples of BRR settings in asynchronous
mode. Table 11.4 shows examples of BRR settings in
synchronous mode.
Table 11.3 Examples
of Bit Rates and BRR
Settings in
Asynchronous Mode
352
Table amended
φφ (MHz)
6
Bit Rate
(bits/s)
n
N
Error
(
%)
110
2
106
–0.44
150
2
77
0.16
300
1
155
0.16
12
n
N
Error
(
%)
2
212
0.03
2
155
0.16
2
77
0.16
11.3.4 Synchronous
Operation
Figure 11.17 Example
of SCI Transmit
Operation
382
Figure amended
Transmit
direction
Serial clock
Serial data
TDRE
TEND
Bit 0
Bit 1
Bit 7
Bit 0
Bit 1
Bit 6
Bit 7
TXI interrupt handler
writes data in TDR
and clears TDRE
flag to 0
TXI
request
TXI
request
TEI
request
1 frame
15.8.3 Error
Protection
Figure 15.13 Flash
Memory State
Transitions (Modes 5,
6, and 7 (on-chip ROM
enabled), high level
applied to FWE pin)
485
Figure amended
RD VF PR ER INIT FLER= 1
Error protection mode
(software standby)
16.2.1 Connecting a
Crystal Resonator
Table 16.2 Crystal
Resonator Parameters
504
Preliminary deleted



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