HD6413008VX25 Renesas Electronics America, HD6413008VX25 Datasheet - Page 168
HD6413008VX25
Manufacturer Part Number
HD6413008VX25
Description
MCU 5V 0K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Datasheet
1.D13008VFBL25V.pdf
(688 pages)
Specifications of HD6413008VX25
Core Processor
H8/300H
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
PWM, WDT
Number Of I /o
35
Program Memory Type
ROMless
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Other names
HD6413008VTE25
HD6413008VTE25
HD6413008VTE25
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6. Bus Controller
6.4
6.4.1
The basic bus interface enables direct connection of ROM, SRAM, and so on.
The bus specifications can be selected with ABWCR, ASTCR, WCRH, and WCRL
(see table 6.3).
6.4.2
Data sizes for the CPU and other internal bus masters are byte, word, and longword. The bus
controller has a data alignment function, and when accessing external space, controls whether the
upper data bus (D
for the area being accessed (8-bit access area or 16-bit access area) and the data size.
8-Bit Access Areas: Figure 6.7 illustrates data alignment control for 8-bit access space. With 8-bit
access space, the upper data bus (D
can be accessed at one time is one byte: a word access is performed as two byte accesses, and a
longword access, as four byte accesses.
16-Bit Access Areas: Figure 6.8 illustrates data alignment control for 16-bit access areas. With
16-bit access areas, the upper data bus (D
accesses. The amount of data that can be accessed at one time is one byte or one word, and a
longword access is executed as two word accesses.
Rev.4.00 Aug. 20, 2007 Page 122 of 638
REJ09B0395-0400
Byte size
Word size
Longword size
Basic Bus Interface
Overview
Data Size and Data Alignment
Figure 6.7 Access Sizes and Data Alignment Control (8-Bit Access Area)
15
to D
8
) or lower data bus (D
1st bus cycle
2nd bus cycle
1st bus cycle
2nd bus cycle
3rd bus cycle
4th bus cycle
15
to D
15
8
) is always used for accesses. The amount of data that
to D
7
8
to D
) and lower data bus (D
D
15
Upper data bus
0
) is used according to the bus specifications
D
8
D
7
7
Lower data bus
to D
0
) are used for
D
0
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