DF2378BVFQ35V Renesas Electronics America, DF2378BVFQ35V Datasheet - Page 466
DF2378BVFQ35V
Manufacturer Part Number
DF2378BVFQ35V
Description
IC H8S/2378 MCU FLASH 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Specifications of DF2378BVFQ35V
Core Processor
H8S/2000
Core Size
16-Bit
Speed
35MHz
Connectivity
I²C, IrDA, SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
97
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
32K 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
For Use With
YLCDRSK2378 - KIT DEV EVAL H8S/2378 LCDYR0K42378FC000BA - KIT EVAL FOR H8S/2378HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)EDK2378 - DEV EVAL KIT FOR H8S/2378
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Part Number:
DF2378BVFQ35V
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Section 8 EXDMA Controller (EXDMAC)
EDREQ Pin Low Level Activation Timing: Figure 8.20 shows an example of normal mode
transfer activated by the EDREQ pin low level.
EDREQ pin sampling is performed in each cycle starting at the next rise of φ after the end of the
EDMDR write cycle for setting the transfer-enabled state.
When a low level is sampled at the EDREQ pin while acceptance via the EDREQ pin is possible,
the request is held within the EXDMAC. Then when activation is initiated within the EXDMAC,
the request is cleared. At the end of the write cycle, acceptance resumes and EDREQ pin low level
sampling is performed again; this sequence of operations is repeated until the end of the transfer.
Figure 8.21 shows an example of block transfer mode transfer activated by the EDREQ pin low
level.
Rev.7.00 Mar. 18, 2009 page 398 of 1136
REJ09B0109-0700
φ
EDREQ
Address bus
DMA control
Channel
[1]
[2], [5] Request is cleared at end of next bus cycle, and activation is started in EXDMAC.
[3], [6] DMA cycle is started.
[4], [7] Acceptance is resumed after completion of write cycle.
Figure 8.20 Example of Normal Mode Transfer Activated by EDREQ Pin Low Level
Acceptance after transfer enabling; EDREQ pin low level is sampled at rise of φ, and request is held.
(As in [1], EDREQ pin low level is sampled at rise of φ, and request is held.)
Idle
[1]
Minimum 3 cycles
Request
Bus release
[2]
Read
[3]
Request clearance period
Transfer source
DMA read
Write
DMA write
destination
Transfer
Idle
Acceptance
resumed
[4]
Minimum 3 cycles
Request
Bus release
[5]
Read
Request clearance period
[6]
Transfer source
DMA read
Write
DMA write
destination
Transfer
Idle
Acceptance
resumed
[7]
Bus release
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