Z8F1621VN020SC00TR Zilog, Z8F1621VN020SC00TR Datasheet - Page 79

• Manufacturer Part Number: Z8F1621VN020SC00TR
• Description: IC ENCORE MCU FLASH 16K 44PLCC
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F1621VN020SC00TR

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 31
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-LCC (J-Lead)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: Z8F1621VN020SC00T

Operation
PS019921-0308
Master Interrupt Enable
The master interrupt enable bit (IRQE) in the Interrupt Control register globally enables
and disables interrupts.
Interrupts are globally enabled by any of the following actions:
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•
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Interrupts are globally disabled by any of the following actions:
•
•
•
•
•
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Internal Interrupts
Port Interrupts
Executing an Enable Interrupt (EI) instruction.
Executing an Return from Interrupt (IRET) instruction.
Writing a 1 to the IRQE bit in the Interrupt Control register.
Execution of a Disable Interrupt (DI) instruction.
eZ8 CPU acknowledgement of an interrupt service request from the interrupt
controller.
Writing a 0 to the IRQE bit in the Interrupt Control register.
Reset.
Executing a Trap instruction.
Illegal Instruction trap.
Figure 10. Interrupt Controller Block Diagram
Medium
Priority
Priority
Priority
High
Low
Priority
Z8 Encore! XP
Mux
Product Specification
Vector
IRQ Request
®
Interrupt Controller
F64XX Series
65