UPD78F1144AGB-GAH-AX Renesas Electronics America, UPD78F1144AGB-GAH-AX Datasheet - Page 595

• Manufacturer Part Number: UPD78F1144AGB-GAH-AX
• Description: MCU 16BIT 78K0R/KX3 64-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1144AGB-GAH-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

15.4.2 Software interrupt request acknowledgment
disabled.
status word (PSW), then program counter (PC), the IE flag is reset (0), and the contents of the vector table (0007EH,
0007FH) are loaded into the PC and branched.
Remark 1 clock: 1/f
Remark 1 clock: 1/f
A software interrupt acknowledge is acknowledged by BRK instruction execution. Software interrupts cannot be
If a software interrupt request is acknowledged, the contents are saved into the stacks in the order of the program
Restoring from a software interrupt is possible by using the RETB instruction.
Caution Do not use the RETI instruction for restoring from the software interrupt.
CPU processing
CPU processing
××IF
××IF
Figure 15-9. Interrupt Request Acknowledgment Timing (Maximum Time)
Figure 15-8. Interrupt Request Acknowledgment Timing (Minimum Time)
CLK
CLK
(f
(f
CLK
CLK
Instruction
Instruction
: CPU clock)
: CPU clock)
CHAPTER 15 INTERRUPT FUNCTIONS
User’s Manual U17854EJ9V0UD
Instruction
RET instruction
6 clocks
14 clocks
PSW and PC saved,
jump to interrupt
servicing
PSW and PC saved,
jump to interrupt
servicing
9 clocks
6 clocks
6 clocks
Interrupt servicing
program
Interrupt servicing
program
593