DF2377RVFQ33 Renesas Electronics America, DF2377RVFQ33 Datasheet - Page 318
DF2377RVFQ33
Manufacturer Part Number
DF2377RVFQ33
Description
IC H8S MCU FLASH 3V 384K 144LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheet
1.YR0K42378FC000BA.pdf
(1208 pages)
Specifications of DF2377RVFQ33
Core Processor
H8S/2000
Core Size
16-Bit
Speed
33MHz
Connectivity
I²C, IrDA, SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
97
Program Memory Size
384KB (384K x 8)
Program Memory Type
FLASH
Ram Size
24K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 16x10b; D/A 6x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Section 6 Bus Controller (BSC)
Write after Read: If an external write occurs after an external read while the ICIS0 bit is set to 1
in BCR, an idle cycle is inserted at the start of the write cycle.
Figure 6.66 shows an example of the operation in this case. In this example, bus cycle A is a read
cycle for ROM with a long output floating time, and bus cycle B is a CPU write cycle. In (a), an
idle cycle is not inserted, and a collision occurs in bus cycle B between the read data from ROM
and the CPU write data. In (b), an idle cycle is inserted, and a data collision is prevented.
Rev.7.00 Mar. 18, 2009 page 250 of 1136
REJ09B0109-0700
Address bus
CS (area A)
CS (area B)
Data bus
HWR
RD
Figure 6.66 Example of Idle Cycle Operation (Write after Read)
φ
(a) No idle cycle insertion
T
1
(ICIS0 = 0)
Bus cycle A
Long output floating time
T
2
T
3
Bus cycle B
T
1
T
2
Data collision
Address bus
CS (area A)
CS (area B)
Data bus
HWR
RD
φ
T
(b) Idle cycle insertion
1
Bus cycle A
(ICIS0 = 1, initial value)
T
2
T
3
Idle cycle
T
i
Bus cycle B
T
1
T
2
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