ZLF645E0H2864G00TR Maxim Integrated, ZLF645E0H2864G00TR Datasheet - Page 140

• Manufacturer Part Number: ZLF645E0H2864G00TR
• Description: 8-bit Microcontrollers - MCU Crimzon Flash Infrared MCU
• Manufacturer: Maxim Integrated

Specifications of ZLF645E0H2864G00TR

• 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
• Package / Case: SSOP-28
• Mounting Style: SMD/SMT
• Interface Type: UART
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Number Of Programmable I/os: 5
• Number Of Timers: 2 x 8 bit, 1 x 16 bit
• Processor Series: ZLF645
• Program Memory Type: Flash

19-4572; Rev 0; 4/09
Bit Position
[5] 
[4]
[3]
[2]
[1]
[0]
Note:
Value
The IRQ register is protected from change until an EI instruction is executed once.
Read
Read
Read
Read
Read
Read
Write
Write
Write
Write
Write
Write
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Description
IRQ5 (Low-Voltage Detection)
Interrupt did not occur.
Interrupt occurred.
Clear interrupt.
Set interrupt.
IRQ4 (T8 Counter)
Interrupt did not occur.
Interrupt occurred.
Clear interrupt.
Set interrupt.
IRQ3 (T16 Counter)
Interrupt did not occur.
Interrupt occurred.
Clear interrupt.
Set interrupt.
IRQ2 (Port 3 Bit 1 Input)
Interrupt did not occur.
Interrupt occurred.
Clear interrupt.
Set interrupt.
IRQ1 (Port 3 Bit 3 Input/SMR Event/UART T
Interrupt did not occur.
Interrupt occurred.
Clear interrupt.
Set interrupt.
IRQ0 (Port 3 Bit 2 Input/UART R
Interrupt did not occur.
Interrupt occurred.
Clear interrupt.
Set interrupt.
X
)
X
/UART BRG)
ZLF645 Series Flash MCUs
Product Specification
Interrupt Request Register
132