UPD78F0552MA-FAA-AX Renesas Electronics America, UPD78F0552MA-FAA-AX Datasheet - Page 645
UPD78F0552MA-FAA-AX
Manufacturer Part Number
UPD78F0552MA-FAA-AX
Description
MCU 8BIT 16-SSOP
Manufacturer
Renesas Electronics America
Series
78K0/Kx2-Lr
Datasheet
1.UPD78F0551MA-FAA-AX.pdf
(822 pages)
Specifications of UPD78F0552MA-FAA-AX
Core Processor
78K/0
Core Size
8-Bit
Speed
10MHz
Connectivity
I²C, LIN, UART/USART
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
9
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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78K0/Kx2-L
17.4.2 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 (003EH,
003FH) are loaded into the PC and branched.
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
CPU processing
CPU processing
Remark 1 clock: 1/f
Remark 1 clock: 1/f
A software interrupt acknowledge is acknowledged by BRK instruction execution.
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.
(
(
(
(
PR = 1)
PR = 0)
PR = 1)
PR = 0)
IF
IF
IF
IF
Figure 17-27. Interrupt Request Acknowledgment Timing (Maximum Time)
Figure 17-26. Interrupt Request Acknowledgment Timing (Minimum Time)
CPU
CPU
(f
(f
CPU
CPU
Instruction
Instruction
: CPU clock)
: CPU clock)
Divide instruction
Instruction
25 clocks
33 clocks
32 clocks
CHAPTER 17 INTERRUPT FUNCTIONS
8 clocks
PSW and PC saved,
jump to interrupt
servicing
PSW and PC saved,
jump to interrupt
servicing
7 clocks
6 clocks
6 clocks
Software interrupts cannot be
Interrupt servicing
program
Interrupt servicing
program
631
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