DF2170VTE33 Renesas Electronics America, DF2170VTE33 Datasheet - Page 128
DF2170VTE33
Manufacturer Part Number
DF2170VTE33
Description
MCU 3V 256K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Datasheet
1.DF2170BVTE33V.pdf
(572 pages)
Specifications of DF2170VTE33
Core Processor
H8S/2000
Core Size
16-Bit
Speed
33MHz
Connectivity
SCI, USB
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
76
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Other names
HD64F2170VTE33
HD64F2170VTE33
HD64F2170VTE33
Available stocks
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Part Number
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Quantity
Price
Company:
Part Number:
DF2170VTE33V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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6.3.6
DRAMCR is used to make DRAM interface settings.
Rev. 2.00, 03/04, page 94 of 534
Bit
15
14
13
12
11 to 9
8
7
DRAM Control Register (DRAMCR)
Bit Name
RAST
CAST
DSET
BE
Initial
Value
0
0
0
0
All 0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
Reserved
This bit can be read from or written to. However, the
write value should always be 0.
RAS Assertion Timing Select
Selects whether, in DRAM access, the RAS signal is
asserted from the start of the T
or from the falling edge of φ.
Figure 6.4 shows the relationship between the RAST bit
setting and the RAS assertion timing.
0: RAS is asserted from φ falling edge in T
1: RAS is asserted from start of T
Reserved
This bit can be read from or written to. However, the
write value should always be 0.
Column Address Output Cycle Number Select
Selects whether the column address output cycle in
DRAM access comprises 3 states or 2 states.
0: Column address output cycle comprises 2 states
1: Column address output cycle comprises 3 states
Reserved
These bits can be read from or written to. However, the
write value should always be 0.
DRAM Space Setting
Specifies area 2 as DRAM space.
0: Area 2 is specified as normal space
1: Area 2 is specifies as DRAM space
Burst Access Enable
Selects enabling or disabling of burst access to areas
designated as DRAM space. DRAM space burst access
is performed in fast page mode. When using EDO page
mode DRAM, the RD signal must be connected as the
OE signal.
0: Full access
1: Access in fast page mode
r
cycle (rising edge of φ)
r
cycle
r
cycle
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