R5F61662N50FPV Renesas Electronics America, R5F61662N50FPV Datasheet - Page 266
R5F61662N50FPV
Manufacturer Part Number
R5F61662N50FPV
Description
MCU 24KB FLASH 384K 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8SX/1600r
Datasheet
1.R0K561622S000BE.pdf
(1070 pages)
Specifications of R5F61662N50FPV
Core Processor
H8SX
Core Size
16/32-Bit
Speed
50MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, SmartCard, USB
Peripherals
DMA, LVD, POR, PWM, WDT
Number Of I /o
92
Program Memory Size
384KB (384K x 8)
Program Memory Type
FLASH
Ram Size
40K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5F61662N50FPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 8 Bus Controller (BSC)
When consecutively reading from the same area connected to a peripheral LSI whose data hold
time is long, data outputs from the peripheral LSI and this LSI may conflict. Inserting the chip
select assertion period extension cycle after the access cycle can avoid the data conflict.
Figure 8.35 shows an example of the operation. In the figure, both bus cycles A and B are read
access cycles to the address/data multiplexed I/O space. An example of the data conflict is shown
in (a), and an example of avoiding the data conflict by the CS assertion period extension cycle in
(b).
Rev. 2.00 Sep. 16, 2009 Page 236 of 1036
REJ09B0414-0200
Bφ
Address bus
CS
AH
RD
Data bus
Bφ
Address bus
CS
AH
RD
Data bus
Figure 8.35 Consecutive Read Accesses to Same Area
(a) Without CS assertion period extension cycle (CSXTn = 0)
(b) With CS assertion period extension cycle (CSXTn = 1)
(Address/Data Multiplexed I/O Space)
Bus cycle A
Bus cycle A
Data hold time is long.
Bus cycle B
Data conflict
Bus cycle B
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