UPD78F0550MA-FAA-AX Renesas Electronics America, UPD78F0550MA-FAA-AX Datasheet - Page 581
UPD78F0550MA-FAA-AX
Manufacturer Part Number
UPD78F0550MA-FAA-AX
Description
MCU 8BIT 16-SSOP
Manufacturer
Renesas Electronics America
Series
78K0/Kx2-Lr
Datasheet
1.UPD78F0550MA-FAA-AX.pdf
(734 pages)
Specifications of UPD78F0550MA-FAA-AX
Package / Case
*
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Speed
10MHz
Number Of I /o
12
Core Processor
78K/0
Program Memory Type
FLASH
Ram Size
384 x 8
Program Memory Size
4KB (4K x 8)
Data Converters
A/D 4x10b
Oscillator Type
Internal
Peripherals
LVD, POR, PWM, WDT
Connectivity
I²C, LIN, UART/USART
Core Size
8-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Manufacturer
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Price
Company:
Part Number:
UPD78F0550MA-FAA-AX
Manufacturer:
Renesas
Quantity:
800
Part Number:
UPD78F0550MA-FAA-AX
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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17.4 Interrupt Servicing Operations
17.4.1 Maskable interrupt acknowledgment
corresponding to that interrupt request is cleared to 0. A vectored interrupt request is acknowledged if interrupts are
in the interrupt enabled state (when the IE flag is set to 1).
acknowledged during servicing of a higher priority interrupt request (when the ISP flag is reset to 0).
in Table 17-4 below.
specified in the priority specification flag is acknowledged first. If two or more interrupts requests have the same
priority level, the request with the highest default priority is acknowledged first.
PC, the IE flag is reset (0), and the contents of the priority specification flag corresponding to the acknowledged
interrupt are transferred to the ISP flag. The vector table data determined for each interrupt request is the loaded into
the PC and branched.
A maskable interrupt becomes acknowledgeable when the interrupt request flag is set to 1 and the mask (MK) flag
The times from generation of a maskable interrupt request until vectored interrupt servicing is performed are listed
For the interrupt request acknowledgment timing, refer to Figures 17-20 and 17-21.
Note If an interrupt request is generated just before a divide instruction, the wait time becomes longer.
Remark 1 clock: 1/f
If two or more maskable interrupt requests are generated simultaneously, the request with a higher priority level
An interrupt request that is held pending is acknowledged when it becomes acknowledgeable.
Figure 17-7 shows the interrupt request acknowledgment algorithm.
If a maskable interrupt request is acknowledged, the contents are saved into the stacks in the order of PSW, then
Restoring from an interrupt is possible by using the RETI instruction.
Table 17-4. Time from Generation of Maskable Interrupt Until Servicing
When
When
CPU
(f
CPU
PR = 0
PR = 1
: CPU clock)
CHAPTER 17 INTERRUPT FUNCTIONS
Preliminary User’s Manual U19111EJ2V1UD
7 clocks
8 clocks
Minimum Time
However, a low-priority interrupt request is not
32 clocks
33 clocks
Maximum Time
Note
581
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