Z8F042AHH020EG Zilog, Z8F042AHH020EG Datasheet - Page 226

• Manufacturer Part Number: Z8F042AHH020EG
• Description: IC ENCORE XP MCU FLASH 4K 20SSOP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F042AHH020EG

• 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: 4KB (4K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• 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: -40°C ~ 105°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4156; Z8F042AHH020EG

Condition Codes
PS022517-0508
The C, Z, S, and V flags control the operation of the conditional jump (JP cc and JR cc)
instructions. Sixteen frequently useful functions of the flag settings are encoded in a 4-bit
field called the condition code (cc), which forms Bits 7:4 of the conditional jump
instructions. The condition codes are summarized in
codes can be created using more than one assembly code mnemonic. The result of the flag
test operation decides if the conditional jump is executed.
Table 117. Condition Codes
Binary
0000
0001
0010
0100
0101
1000
1001
1010
0011
0110
0110
0111
0111
1011
1100
1101
1110
1110
1111
1111
Hex
C
D
A
B
E
E
F
F
0
1
2
3
4
5
6
6
7
7
8
9
Assembly
Mnemonic Definition
F
LT
LE
ULE
OV
Ml
Z
EQ
C
ULT
T (or blank)
GE
GT
UGT
NOV
PL
NZ
NE
NC
UGE
Always False
Less Than
Less Than or Equal
Unsigned Less Than or Equal (C OR Z) = 1
Overflow
Minus
Zero
Equal
Carry
Unsigned Less Than
Always True
Greater Than or Equal
Greater Than
Unsigned Greater Than
No Overflow
Plus
Non-Zero
Not Equal
No Carry
Unsigned Greater Than or
Equal
Table
Z8 Encore! XP
117. Some binary condition
Product Specification
Flag Test Operation
–
(S XOR V) = 1
(Z OR (S XOR V)) = 1
V = 1
S = 1
Z = 1
Z = 1
C = 1
C = 1
–
(S XOR V) = 0
(Z OR (S XOR V)) = 0
(C = 0 AND Z = 0) = 1
V = 0
S = 0
Z = 0
Z = 0
C = 0
C = 0
eZ8 CPU Instruction Set
®
F0822 Series
213