Z8F082AHH020SG2156 Zilog, Z8F082AHH020SG2156 Datasheet - Page 41

• Manufacturer Part Number: Z8F082AHH020SG2156
• Description: IC ENCORE XP MCU FLASH 8K
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F082AHH020SG2156

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: IrDA, UART/USART
• Peripherals: Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 17
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: Q5278375

UM012811-0904
1. Push the low byte of the Program Counter, PC[7:0], on the stack.
2. Push the high byte of the Program Counter, PC[15:8], on the stack.
3. Push the Flags Register on the stack.
4. Fetch the High Byte of the Interrupt Vector
5. Fetch the Low Byte of the Interrupt Vector
6. Branch to the Interrupt Service Routine specified by the Interrupt Vector
Figure 17 illustrates the effect of vectored interrupts on the Stack Pointer and the contents
of the stack. Figure 18 provides an example of the Program Memory during interrupt oper-
ation. In the example of Figure 18, the Interrupt Vector is located at address
gram Memory. The 2-byte Interrupt Vector, stored at Program Memory addresses
and
tine begins at Program Memory address
Stack Pointer and Stack
Before an Interrupt
Figure 17. Effects of an Interrupt on the Stack
Stack Pointer
0015H
, is loaded into the Program Counter. Execution of the Interrupt Service Rou-
Top of Stack
4567H
, as is stored in the Interrupt Vector.
Stack Pointer and Stack
After an Interrupt
Stack Pointer
User Manual
0014H
Flags[7:0]
PC[15:8]
PC[7:0]
eZ8 CPU
Interrupts
0014H
in Pro-
31