HD64F3067RF20 Renesas Electronics America, HD64F3067RF20 Datasheet - Page 198
HD64F3067RF20
Manufacturer Part Number
HD64F3067RF20
Description
IC H8 MCU FLASH 128K 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Datasheet
1.DF3067RF20VTR.pdf
(965 pages)
Specifications of HD64F3067RF20
Core Processor
H8/300H
Core Size
16-Bit
Speed
20MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, PWM, WDT
Number Of I /o
70
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-QFP
Package
100PQFP
Family Name
H8
Maximum Speed
20 MHz
Operating Supply Voltage
5 V
Data Bus Width
16|32 Bit
Number Of Programmable I/os
70
Interface Type
SCI
On-chip Adc
8-chx10-bit
On-chip Dac
2-chx8-bit
Number Of Timers
7
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
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Part Number:
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Section 6 Bus Controller
6.5.10
Burst Operation
With DRAM, in addition to full access (normal access) in which data is accessed by outputting a
row address for each access, a fast page mode is also provided which can be used when making a
number of consecutive accesses to the same row address. This mode enables fast (burst) access of
data by simply changing the column address after the row address has been output. Burst access
can be selected by setting the BE bit to 1 in DRCRA.
Burst Access (Fast Page Mode) Operation Timing: Figure 6.22 shows the operation timing for
burst access. When there are consecutive access cycles for DRAM space, the column address and
CAS signal output cycles (two states) continue as long as the row address is the same for
consecutive access cycles. In burst access, too, the bus cycle can be extended by inserting wait
states between T
and T
. The wait state insertion method and timing are the same as for full
c1
c2
access: see section 6.5.8, Wait Control, for details.
The row address used for the comparison is determined by the bus width of the relevant area set in
bits MXC1 and MXC0 in BRCRB, and in ABWCR. Table 6.9 shows the compared row addresses
corresponding to the various settings of bits MXC1 and MXC0, and ABWCR.
Rev. 4.00 Jan 26, 2006 page 174 of 938
REJ09B0276-0400
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