D12350F20IV Renesas Electronics America, D12350F20IV Datasheet - Page 253

• Manufacturer Part Number: D12350F20IV
• Description: IC H8S/2350 MCU 4.5/5.5V 0+K I-T
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12350F20IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Type: ROMless
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

(2) Block Transfer Mode
ETCRA:
ETCRB:
In block transfer mode, ETCRAL functions as an 8-bit block size counter and ETCRAH holds the
block size. ETCRAL is decremented each time a 1-byte or 1-word transfer is performed, and when
the count reaches H'00, ETCRAL is loaded with the value in ETCRAH. So by setting the block
size in ETCRAH and ETCRAL, it is possible to repeatedly transfer blocks consisting of any
desired number of bytes or words.
ETCRB functions in block transfer mode, as a 16-bit block transfer counter. ETCRB is
decremented by 1 each time a block is transferred, and transfer ends when the count reaches
H'0000.
Bit
ETCRB
Initial value
R/W
Block Transfer Counter
Holds block size
Bit
ETCRAH
Initial value
R/W
Block size counter
Bit
ETCRAL
Initial value
R/W
:
:
:
:
:
:
:
:
:
:
:
:
R/W
15
*
R/W
R/W
15
R/W
*
7
*
14
*
R/W
13
*
R/W
R/W
14
R/W
6
*
*
12
*
R/W
11
*
R/W
R/W
13
*
5
*
R/W
10
*
R/W
9
*
R/W
R/W
12
4
*
*
R/W
8
*
Rev. 3.00 Sep 15, 2006 page 217 of 988
R/W
7
*
R/W
R/W
11
3
*
*
R/W
Section 7 DMA Controller (DMAC)
6
*
R/W
R/W
R/W
5
*
10
2
*
*
R/W
4
*
R/W
R/W
R/W
3
*
REJ09B0330-0300
9
1
*
*
R/W
*: Undefined
2
*
R/W
R/W
R/W
1
*
8
0
*
*
R/W
0
*