ZLF645S2864GP0001 Maxim Integrated, ZLF645S2864GP0001 Datasheet - Page 113

• 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

ZLF645 Series Flash MCUs
Product Specification
105
T8 DEMODULATION Mode
You must program TC8L and TC8H to
. After T8 is enabled, when the first edge (ris-
FFh
ing, falling, or both depending on CTR1 bits [5:4]) is detected, it starts to count down.
When a subsequent edge (rising, falling, or both depending on CTR1 bits [5:4]) is detected
during counting, the current value of T8 is complemented and put into one of the capture
registers.
If it is a positive edge, data is put into LO8; if it is a negative edge, data is put into HI8.
From that point, one of the edge detect status bits (CTR1, bits [1:0]) is set, and an interrupt
can be generated if enabled (CTR0, bit 2). Meanwhile, T8 is loaded with
and starts
FFh
counting again. If T8 reaches 0, the time-out status bit (CTR0, bit 5) is set, and an interrupt
can be generated if enabled (CTR0, bit 1). T8 then continues counting from
see
FFh(
Figure 32
on page 106).
19-4572; Rev 0; 4/09
Counter/Timer Functional Blocks