DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 208
DF2148BTE20
Manufacturer Part Number
DF2148BTE20
Description
IC H8S MCU FLASH 128K 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Specifications of DF2148BTE20
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
I²C, IrDA, SCI, X-Bus
Peripherals
PWM, WDT
Number Of I /o
74
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
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
HD64F2148BTE20
HD64F2148BTE20
HD64F2148BTE20
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2148BTE20V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 208 of 847
- Download datasheet (5Mb)
Section 7 Data Transfer Controller (DTC)
7.3
Activation Sources
The DTC is activated by an interrupt request or by a write to DTVECR by software. The interrupt
request source to activate the DTC is selected by DTCER. At the end of a data transfer (or the last
consecutive transfer in the case of chain transfer), the interrupt flag that became the activation
source or the corresponding DTCER bit is cleared. The activation source flag, in the case of RXI0,
for example, is the RDRF flag in SCI_0.
When an interrupt has been designated as a DTC activation source, the existing CPU mask level
and interrupt controller priorities have no effect. If there is more than one activation source at the
same time, the DTC operates in accordance with the default priorities. Figure 7.2 shows a block
diagram of DTC activation source control. For details on the interrupt controller, see section 5,
Interrupt Controller.
Source flag cleared
Clear
controller
Clear
DTCER
Clear request
Select
On-chip
DTC
peripheral
module
IRQ interrupt
Interrupt
request
CPU
Interrupt controller
DTVECR
Interrupt mask
Figure 7.2 Block Diagram of DTC Activation Source Control
Rev. 3.00 Mar 21, 2006 page 152 of 788
REJ09B0300-0300
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