HD64F2218UTF24 Renesas Electronics America, HD64F2218UTF24 Datasheet - Page 207
HD64F2218UTF24
Manufacturer Part Number
HD64F2218UTF24
Description
IC H8S MCU FLASH 128K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2200r
Specifications of HD64F2218UTF24
Core Processor
H8S/2000
Core Size
16-Bit
Speed
24MHz
Connectivity
SCI, SmartCard, USB
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
69
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
12K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
100-TQFP, 100-VQFP
For Use With
3DK2218-SS - KIT DEV H8S/2218 WINDOWS SIDESHW
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HD64F2218UTF24V
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
- Current page: 207 of 758
- Download datasheet (5Mb)
Write after Read: If an external write occurs after an external read while the ICIS0 bit in BCRH
is set to 1, an idle cycle is inserted at the start of the write cycle.
Figure 6.23 shows an example of the operation in this case. In this example, bus cycle A is a read
cycle from 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 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.
Relationship between Chip Select (CS) Signal and Read (RD) Signal: Depending on the
system's load conditions, the RD signal may lag behind the CS signal. An example is shown in
figure 6.24.
In this case, with the setting for no idle cycle insertion (a), there may be a period of overlap
between the bus cycle A RD signal and the bus cycle B CS signal.
Setting idle cycle insertion, as in (b), however, will prevent any overlap between the RD and CS
signals.
In the initial state after reset release, idle cycle insertion (b) is set.
Address bus
CS (area A)
CS (area B)
Data bus
HWR
RD
φ
(a) Idle cycle not inserted
(ICIS0 = 0)
T
Bus cycle A
1
Figure 6.23 Example of Idle Cycle Operation (2)
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
Rev.7.00 Dec. 24, 2008 Page 151 of 698
T
1
Bus cycle A
(b) Idle cycle inserted
(Initial value ICIS0 = 1)
T
2
T
3
T
Bus cycle B
I
REJ09B0074-0700
T
1
T
2
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