D12321VF20V Renesas Electronics America, D12321VF20V Datasheet - Page 326
D12321VF20V
Manufacturer Part Number
D12321VF20V
Description
IC H8S/2321 MCU ROMLESS 128QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2300r
Specifications of D12321VF20V
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
86
Program Memory Type
ROMless
Ram Size
4K 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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
D12321VF20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 7 DMA Controller (Not Supported in the H8S/2321)
Figure 7.30 shows a transfer example in which TEND output is enabled and word-size single
address mode transfer (write) is performed from an external device to external 8-bit, 2-state access
space.
A one-byte or one-word transfer is performed for one transfer request, and after the transfer the
bus is released. While the bus is released one or more bus cycles are executed by the CPU or DTC.
In the transfer end cycle (the cycle in which the transfer counter reaches 0), a one-state DMA dead
cycle is inserted after the DMA write cycle.
Rev.6.00 Sep. 27, 2007 Page 294 of 1268
REJ09B0220-0600
Address bus
DACK
TEND
HWR
LWR
φ
Figure 7.30 Example of Single Address Mode (Word Write) Transfer
release
Bus
DMA write
release
Bus
DMA write
release
Bus
Last transfer
DMA write
cycle
DMA
dead
release
Bus
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