ZLF645S2864GP0001 Maxim Integrated, ZLF645S2864GP0001 Datasheet - Page 168

• Manufacturer Part Number: ZLF645S2864GP0001
• Description: 8-bit Microcontrollers - MCU Crimzon Flash Infrared MCU
• Manufacturer: Maxim Integrated

Specifications of ZLF645S2864GP0001

• Core: Z8
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 64 KB
• Data Ram Size: 1 KB
• Operating Supply Voltage: 2 V to 3.6 V
• Interface Type: UART
• Number Of Programmable I/os: 5
• Number Of Timers: 2 x 8 bit, 1 x 16 bit
• Processor Series: ZLF645
• Program Memory Type: Flash

Table 76. Flags Register (FLAGS)
19-4572; Rev 0; 4/09
Bit
Field
Reset
R/W
Address
Bit Position
[7]
[6]
[5]
[4]
Flags Register
R/W
Table 75. Additional Symbols (Continued)
The Flags register (see
bits of status information.
Symbol

~
C
X
Value
7
0
1
0
1
0
1
0
1
Description
Carry Flag (C)
Set when the result of an arithmetic operation generates a carry out of or a
borrow into the high-order bit (bit 7) of the result. Also used in rotate and shift
instructions.
Flag Clear
Flag Set
Zero Flag (Z)
Set when the result of an arithmetic operation is 0.
Flag Clear
Flag Set
Sign Flag (S)
Stores the value of the most significant bit (msb) following an arithmetic, logical,
rotate, or shift instruction.
Flag Clear
Flag Set
Overflow Flag (O)
Set when the result of an arithmetic operation is greater than 127.
Flag Clear
Flag Set
R/W
X
6
Z
Definition
Exchange of two values
One’s complement unary operator
R/W
Table
Bank Independent: FCh; Linear: 0FCh
S
X
5
76) informs the current status of the Z8
R/W
O
X
4
R/W
D
X
3
ZLF645 Series Flash MCUs
R/W
H
X
2
Product Specification
®
CPU. It contains six
R/W
F1
X
1
Flags Register
R/W
F2
X
0
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