HD64F2378RVFQ33 Renesas Electronics America, HD64F2378RVFQ33 Datasheet - Page 472
HD64F2378RVFQ33
Manufacturer Part Number
HD64F2378RVFQ33
Description
IC H8S MCU FLASH 512K 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Specifications of HD64F2378RVFQ33
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
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
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Section 8 EXDMA Controller (EXDMAC)
EDREQ Pin Low Level Activation Timing: Figure 8.27 shows an example of single address
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 single cycle, acceptance resumes and EDREQ pin low
level sampling is performed again; this sequence of operations is repeated until the end of the
transfer.
Rev.7.00 Mar. 18, 2009 page 404 of 1136
REJ09B0109-0700
Figure 8.27 Example of Single Address Mode Transfer Activated by EDREQ Pin Low Level
[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 single cycle.
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.)
φ
EDREQ
Address bus
EDACK
DMA control
Channel
Idle
[1]
Minimum 3 cycles
Request
Bus release
[2]
clearance period
Single
[3]
Request
DMA single
Transfer source/
destination
Idle
Acceptance
resumed
[4]
Minimum 3 cycles
Request
Bus release
[5]
clearance period
Single
[6]
Request
DMA single Bus release
Transfer source/
destination
Idle
Acceptance
resumed
[7]
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