HD6417020SVX12I Renesas Electronics America, HD6417020SVX12I Datasheet - Page 160
![IC SUPERH MPU ROMLESS 100TQFP](/photos/28/61/286108/100-tqfp_sml.jpg)
HD6417020SVX12I
Manufacturer Part Number
HD6417020SVX12I
Description
IC SUPERH MPU ROMLESS 100TQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7020r
Datasheet
1.HD6417020SVX12IV.pdf
(511 pages)
Specifications of HD6417020SVX12I
Core Processor
SH-1
Core Size
32-Bit
Speed
12.5MHz
Connectivity
EBI/EMI, SCI
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
32
Program Memory Type
ROMless
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
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Part Number:
HD6417020SVX12I
Manufacturer:
HITACHI/日立
Quantity:
20 000
Company:
Part Number:
HD6417020SVX12IV
Manufacturer:
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Quantity:
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Part Number:
HD6417020SVX12IV
Manufacturer:
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Quantity:
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When the RW1 bit is set to 1, the number of wait states selected by CBR refresh wait state
insertion bits 1 and 0 (RLW1, RLW0) of the refresh control register (RCR) are inserted into the
CAS-before-RAS refresh cycle.
8.5.4
Byte Access Control
16-bit width and 18-bit width DRAMs require different types of byte control signals for access. By
setting the dual CAS signals/dual WE signals select bit (CW2) in the DCR, the BSC allows
selection of either the dual CAS signals or the dual WE signals system of control signals. When
16-bit space is being accessed and the CW2 bit is cleared to 0 for dual CAS signals, CASH,
CASL, and WRL signals are output; when CW2 is set to 1 for dual WE signals, the CASL, WRH,
and WRL signals are output. When accessing 8-bit space, WRL and CASL are output regardless
of the CW2 setting.
Figure 8.21 shows the control timing of the upper byte write cycle (short pitch) in 16-bit space.
140 RENESAS
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