DF3048X16V Renesas Electronics America, DF3048X16V Datasheet - Page 231

• Manufacturer Part Number: DF3048X16V
• Description: MCU 5V 128K,PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048X16V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

8.2.3
An execute transfer count register (ETCR) is a 16-bit readable/writable register that specifies the
number of transfers to be executed. These registers function in one way in I/O mode and idle
mode, and another way in repeat mode.
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
I/O mode and idle mode
In I/O mode and idle mode, ETCR functions as a 16-bit counter. The count is decremented by
1 each time one transfer is executed. The transfer ends when the count reaches H'0000.
Repeat mode
In repeat mode, ETCRH functions as an 8-bit transfer counter and ETCRL holds the initial
transfer count. ETCRH is decremented by 1 each time one transfer is executed. When ETCRH
reaches H'00, the value in ETCRL is reloaded into ETCRH and the same operation is repeated.
The ETCRs are not initialized by a reset or in standby mode.
Execute Transfer Count Registers (ETCR)
R/W
15
R/W
R/W
7
7
R/W
14
R/W
13
R/W
R/W
6
6
R/W
12
R/W
11
R/W
R/W
5
5
R/W
10
R/W
Transfer counter
Transfer counter
9
Undetermined
Undetermined
R/W
Undetermined
R/W
Initial count
4
4
R/W
ETCRH
ETCRL
8
R/W
Rev. 7.00 Sep 21, 2005 page 205 of 878
7
R/W
R/W
3
3
R/W
6
R/W
5
R/W
R/W
2
2
R/W
Section 8 DMA Controller
4
R/W
3
R/W
R/W
REJ09B0259-0700
1
1
R/W
2
R/W
1
R/W
R/W
0
0
R/W
0