DF2328BVF25V Renesas Electronics America, DF2328BVF25V Datasheet - Page 339
DF2328BVF25V
Manufacturer Part Number
DF2328BVF25V
Description
IC H8S MCU FLASH 256K 128QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Datasheets
1.HEWH8E10A.pdf
(19 pages)
2.D12312SVTE25V.pdf
(341 pages)
3.D12322RVF25V.pdf
(1304 pages)
Specifications of DF2328BVF25V
Core Processor
H8S/2000
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
87
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
128-QFP
For Use With
EDK2329 - DEV EVALUATION KIT H8S/2329
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
HD64F2328BVF25V
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2328BVF25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Write Data Buffer Function: When the WDBE bit of BCRL in the bus controller is set to 1,
enabling the write data buffer function, dual address transfer external write cycles or single
address transfers and internal accesses (on-chip memory or internal I/O registers) are executed in
parallel.
• Write Data Buffer Function and DMAC Register Setting
• Write Data Buffer Function and DMAC Operation Timing
• Write Data Buffer Function and TEND Output
If the setting of a register that controls external accesses is changed during execution of an
external access by means of the write data buffer function, the external access may not be
performed normally. Registers that control external accesses should only be manipulated when
external reads, etc., are used with DMAC operation disabled, and the operation is not
performed in parallel with external access.
The DMAC can start its next operation during external access using the write data buffer
function. Consequently, the DREQ pin sampling timing, TEND output timing, etc., are
different from the case in which the write data buffer function is disabled. Also, internal bus
cycles maybe hidden, and not visible.
A low level is not output at the TEND pin if the bus cycle in which a low level is to be output
at the TEND pin is an internal bus cycle, and an external write cycle is executed in parallel
with this cycle. Note, for example, that a low level may not be output at the TEND pin if the
write data buffer function is used when data transfer is performed between an internal I/O
register and on-chip memory.
If at least one of the DMAC transfer addresses is an external address, a low level is output at
the TEND pin.
Figure 7.42 shows an example in which a low level is not output at the TEND pin.
Section 7 DMA Controller (Not Supported in the H8S/2321)
Rev.6.00 Sep. 27, 2007 Page 307 of 1268
REJ09B0220-0600
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