Z8F082AHH020SG2156 Zilog, Z8F082AHH020SG2156 Datasheet - Page 78

• 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

ATM
Atomic Execution
ATM
UM012811-0904
Mnemonic Destination, Source
ATM
Operation
Description
Flags
Attributes
—
Blocks all interrupt and DMA requests during execution of the next 3instructions.
The Atomic instruction forces the eZ8 CPU to execute the next 3 instructions as a single
block (i.e. atom) of operations. During execution of these next 3 instructions, all interrupts
and DMA requests are prevented. This allows operations to be performed on multi-byte
registers and memory locations that could be changed or used by interrupts or the DMA.
One example of potential use of the ATM instruction is during adjustment of the multi-
byte stack pointer value.
C
Z
S
V
D
H
MIE
Unaffected.
Unaffected.
Unaffected.
Unaffected.
Unaffected.
Unaffected.
Unaffected.
Byte 1
2F
Byte 2
—
Byte 3
—
eZ8 CPU Instruction Set Description
Byte 4
—
User Manual
eZ8 CPU
68