UPD78F1506GF-GAT-AX Renesas Electronics America, UPD78F1506GF-GAT-AX Datasheet - Page 774

• Manufacturer Part Number: UPD78F1506GF-GAT-AX
• Description: MCU 16BIT 78K0R/LX3 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Lx3r

Specifications of UPD78F1506GF-GAT-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, I²C, LIN, UART/USART
• Peripherals: DMA, LCD, LVD, POR, PWM, WDT
• Number Of I /o: 78
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x12b, D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0R/Lx3
INTyy is not acknowledged and multiple interrupt servicing does not take place. The INTyy interrupt request is held
pending, and is acknowledged following execution of one main processing instruction.
R01UH0004EJ0401 Rev.4.01
Jul 2, 2010
Example 3. Multiple interrupt servicing does not occur because interrupts are not enabled
Interrupts are not enabled during servicing of interrupt INTxx (EI instruction is not issued), therefore, interrupt request
PR = 00: Specify level 0 with ××PR1× = 0, ××PR0× = 0 (higher priority level)
PR = 01: Specify level 1 with ××PR1× = 0, ××PR0× = 1
PR = 10: Specify level 2 with ××PR1× = 1, ××PR0× = 0
PR = 11: Specify level 1 with ××PR1× = 1, ××PR0× = 1 (lower priority level)
IE = 0:
IE = 1:
Interrupt request acknowledgment is disabled
Interrupt request acknowledgment is enabled.
Figure 19-17. Examples of Multiple Interrupt Servicing (2/2)
(PR = 11)
1 instruction execution
INTxx
Main processing
EI
IE = 1
IE = 0
(PR = 00)
INTyy
IE = 1
INTxx servicing INTyy servicing
IE = 0
RETI
CHAPTER 19 INTERRUPT FUNCTIONS
RETI
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