DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 184
![IC H8S MCU FLASH 128K 100-QFP](/photos/28/61/286108/100-tqfp_sml.jpg)
DF2148ATE20
Manufacturer Part Number
DF2148ATE20
Description
IC H8S MCU FLASH 128K 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Specifications of DF2148ATE20
Core Processor
H8S/2000
Core Size
16-Bit
Speed
20MHz
Connectivity
Host Interface, I²C, IrDA, SCI
Peripherals
POR, 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 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
HD64F2148ATE20
HD64F2148ATE20
HD64F2148ATE20
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2148ATE20IV
Manufacturer:
Renesas Electronics America
Quantity:
135
Company:
Part Number:
DF2148ATE20IV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 5 Interrupt Controller
5.5.2
Enabling and disabling of IRQ interrupts and on-chip supporting module interrupts can be set by
means of the I bit in the CPU’s CCR, and ICR. Interrupts are enabled when the I bit is cleared to
0, and disabled when set to 1. Control level 1 interrupt sources have higher priority.
Figure 5.8 shows a flowchart of the interrupt acceptance operation in this case.
1. If an interrupt source occurs when the corresponding interrupt enable bit is set to 1, an
2. When interrupt requests are sent to the interrupt controller, a control level 1 interrupt,
3. The I bit is then referenced. If the I bit is cleared to 0, the interrupt request is accepted. If the I
4. When an interrupt request is accepted, interrupt exception handling starts after execution of the
5. The PC and CCR are saved to the stack area by interrupt exception handling. The PC saved on
6. Next, the I bit in CCR is set to 1. This disables all interrupts except NMI and address break.
7. A vector address is generated for the accepted interrupt, and execution of the interrupt
Rev. 4.00 Sep 27, 2006 page 138 of 1130
REJ09B0327-0400
interrupt request is sent to the interrupt controller.
according to the control level set in ICR, has priority for selection, and other interrupt requests
are held pending. If a number of interrupt requests with the same control level setting are
generated at the same time, the interrupt request with the highest priority according to the
priority system shown in table 5.4 is selected.
bit is set to 1, only NMI and address break interrupt are accepted, and other interrupt requests
are held pending.
current instruction has been completed.
the stack shows the address of the first instruction to be executed after returning from the
interrupt handling routine.
handling routine starts at the address indicated by the contents of that vector address.
Interrupt Control Mode 0
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