HD64F2623FA20J Renesas Electronics America, HD64F2623FA20J Datasheet - Page 206
HD64F2623FA20J
Manufacturer Part Number
HD64F2623FA20J
Description
IC H8S MCU FLASH 256K 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2600r
Specifications of HD64F2623FA20J
Core Processor
H8S/2600
Core Size
16-Bit
Speed
20MHz
Connectivity
CAN, SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
53
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
12K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 16x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Price
Company:
Part Number:
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Manufacturer:
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Quantity:
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Manufacturer:
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Section 7 Bus Controller
7.8.4
Figure 7.18 shows the timing for transition to the bus-released state.
Rev. 5.00 Jan 10, 2006 page 180 of 1042
REJ09B0275-0500
Address bus
HWR, LWR
BREQO *
[1]
[2]
[3]
[4]
[5]
[6]
Note: * Output only when BREQOE is set to 1.
Data bus
BREQ
BACK
Low level of BREQ pin is sampled at rise of T
BACK pin is driven low at end of CPU read cycle, releasing bus to external bus master.
BREQ pin state is still sampled in external bus released state.
High level of BREQ pin is sampled.
BACK pin is driven high, ending bus release cycle.
BREQO signal goes high 1.5 clocks after BACK signal goes high.
RD
AS
Transition Timing
T
0
Figure 7.18 Bus-Released State Transition Timing
CPU cycle
T
Address
1
[1]
Minimum
1 state
T
2
2
state.
[2]
External bus released state
[3]
High impedance
High impedance
High impedance
High impedance
High impedance
[4]
[5]
cycle
CPU
[6]
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