D12312SVTE25 Renesas Electronics America, D12312SVTE25 Datasheet - Page 191
D12312SVTE25
Manufacturer Part Number
D12312SVTE25
Description
MCU 3V 0K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheet
1.D12312SVTE25V.pdf
(1146 pages)
Specifications of D12312SVTE25
Core Processor
H8S/2000
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
70
Program Memory Type
ROMless
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
2.7 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
HD6412312SVTE25
HD6412312SVTE25
HD6412312SVTE25
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
D12312SVTE25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 191 of 1146
- Download datasheet (7Mb)
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 space or 16-bit access space) and the data size.
8-Bit Access Space: Figure 6.4 illustrates data alignment control for the 8-bit access space. With
the 8-bit access space, the upper data bus (D
data that can be accessed at one time is one byte: a word transfer instruction is performed as two
byte accesses, and a longword transfer instruction, as four byte accesses.
Byte size
Word size
Longword size
Figure 6.4 Access Sizes and Data Alignment Control (8-Bit Access Space)
Basic Bus Interface
Overview
Data Size and Data Alignment
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
7
D
to D
15
Upper data bus
8
) is always used for accesses. The amount of
0
) is used according to the bus specifications
Rev.7.00 Feb. 14, 2007 page 157 of 1108
D
8
D
7
Lower data bus
Section 6 Bus Controller
REJ09B0089-0700
D
0
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