DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 169

• 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

5.6.5
The DTC can be activated by an interrupt. In this case, the following options are available:
For details on interrupt requests that can be used to activate the DTC, see section 7, Data Transfer
Controller (DTC).
Figure 5.8 shows a block diagram of the DTC and interrupt controller.
Selection of Interrupt Source: Interrupt factors are selected as DTC activation source or CPU
interrupt source by the DTCE bit of DTCERA to DTCERE of DTC.
By specifying the DISEL bit of the DTC’s MRB, it is possible to clear the DTCE bit to 0 after
DTC data transfer, and request a CPU interrupt.
If DTC carries out the designate number of data transfers and the transfer counter reads 0, after
DTC data transfer, the DTCE bit is also cleared to 0, and an interrupt is requested to the CPU.
On-chip
supporting
module
Interrupt request to CPU
Activation request to DTC
Selection of a number of the above
IRQ
interrupt
DTC Activation by Interrupt
Interrupt source
clear signal
Interrupt
request
Figure 5.8 DTC and Interrupt Controller
Interrupt controller
Selection
DTVECR
DTCER
circuit
Select
signal
clear signal
Clear signal
SWDTE
Determination of
Control logic
Rev. 3.00 Mar 21, 2006 page 113 of 788
priority
Section 5 Interrupt Controller
DTC activation
request vector
number
CPU interrupt
request vector
number
Clear signal
I, UI
REJ09B0300-0300
CPU
DTC