D13007VX13V Renesas Electronics America, D13007VX13V Datasheet - Page 189
![MCU 3V 0K 100-TQFP](/photos/28/61/286123/100-tqfp__100-vqfp_sml.jpg)
D13007VX13V
Manufacturer Part Number
D13007VX13V
Description
MCU 3V 0K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Specifications of D13007VX13V
Core Processor
H8/300H
Core Size
16-Bit
Speed
13MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, PWM, WDT
Number Of I /o
35
Program Memory Type
ROMless
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 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
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
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6. Bus Controller
When RAS down mode is selected, the CAS-before-RAS refresh function provided with this
DRAM interface must always be used as the DRAM refreshing method. When a refresh
operation is performed, the RAS signal goes high immediately beforehand. The refresh
interval setting must be made so that the maximum DRAM RAS pulse width specification is
observed.
When the self-refresh function is used, the RDM bit must be cleared to 0, and RAS up mode
selected, before executing a SLEEP instruction in order to enter software standby mode.
Select RAS down mode again after exiting software standby mode.
Note that RAS down mode cannot be used when HWR and LWR are selected for UCAS and
LCAS, a device other than DRAM is connected to external space, and HWR and LWR are
used as write strobes.
• RAS Up Mode
To select RAS up mode, clear the RDM bit to 0 in DRCRA. Each time access to DRAM space
is interrupted and another space is accessed, the RAS signal returns to the high level. Burst
operation is only performed if DRAM space is continuous. Figure 6.23 shows an example of
the timing in RAS up mode.
External space
DRAM access
DRAM access
access
T
Tr
T
T
T
T
T
T
p
c1
c2
c1
c2
1
2
φ
A
to A
23
0
AS
CSn(RAS)
PB4/PB5
(UCAS/LCAS)
D
to D
15
0
Note: n = 2 to 5
Figure 6.23 Example of Operation Timing in RAS Up Mode
Rev.5.00 Sep. 12, 2007 Page 159 of 764
REJ09B0396-0500
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