Z8F082AHH020SG2156 Zilog, Z8F082AHH020SG2156 Datasheet - Page 91

• 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

BTJZ
Bit Test and Jump if Zero
BTJZ bit, src, DA
UM012811-0904
Operation
Description
if src[bit] = 0 {
}
where the jump offset, X, is calculated by the eZ8 CPU assembler from the Program
Counter (PC) value and the Destination Address (DA).
The selected bit in the source operand or register pointed to by the source operand is com-
pared with a logical 0. If the selected bit is 0, the signed destination displacement (X) is
added to the Program Counter, that causes a jump. The displacement value can be from -
128 to +127. This instruction tests only a single bit position. Multiple bits cannot be tested
simultaneously.
Figure 22. BTJZ Operand Description
Decimal Binary
Bit Position Tested
PC
0
1
2
3
4
5
6
7
←
PC + X
000
001
010
011
100
101
110
111
Binary
0000
0001
0010
0011
0100
0101
0110
0111
Operand[3:0]
Hexadecimal
0
1
2
3
4
5
6
7
eZ8 CPU Instruction Set Description
User Manual
eZ8 CPU
81