HD6417020SVX12I Renesas Electronics America, HD6417020SVX12I Datasheet - Page 149
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
-
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Part Number:
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High-level duties of 35% and 50% can be selected for the RD signal using the RD duty bit
(RDDTY) of the BCR. When RDDTY is set to 1, the high-level duty is 35% of the T1 state,
enabling longer access times for external devices. Only set to 1 when the operating frequency is a
minimum of 10 MHz.
8.4.2
The number of external memory space access states and the insertion of wait states can be
controlled using the WCR1–WCR3 bits. The bus cycles that can be controlled are the CPU read
cycle and the DMAC dual mode read cycle. The bus cycle that can be controlled using the WCR2
is the DMAC single-mode read/write cycle.
Table 8.8 shows the number of states and number of wait states in the access cycles to external
memory spaces.
Read
Write
Figure 8.12 Basic Timing of External Memory Space Access (2-state read timing)
Wait State Control
WRH, WRL
AD15–AD0
AD15–AD0
A21–A0
CSn
RD
CK
When
RDDTY = 1
T1
When
RDDTY = 0
T2
RENESAS 129
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