z86l88 ZiLOG Semiconductor, z86l88 Datasheet - Page 50

• Manufacturer Part Number: z86l88
• Description: Low-voltage Ir Microcontroller
• Manufacturer: ZiLOG Semiconductor

PS024102-0804
Counter/Timer Functional Blocks
In demodulation mode, when this bit is set to 0, T16 captures and reloads on
detection of all the edges. When this bit is set to 1, T16 captures and detects on
the first edge but ignores the subsequent edges. For details, see “T16 Demodula-
tion Mode” on page 51.
Time_Out
This bit is set when T16 times out (terminal count reached). To reset this bit, a 1
must be written to this location.
T16_Clock
This bit defines the frequency of the input signal to Counter/Timer16.
Capture_INT_Mask
This bit is set to allow an interrupt when data is captured into LO16 and HI16.
Counter_INT_Mask
This bit is set to allow an interrupt when T16 times out.
P35_Out
This bit defines whether P35 is used as a normal output pin or T16 output.
The following are the counter/timer functional blocks:
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Input Circuit
The edge detector monitors the input signal on P31 or P20. Based on CTR1 D5–
D4, a pulse is generated at the Pos Edge or Neg Edge line when an edge is
detected. Glitches in the input signal that have a width less than specified (CTR1
D3, D2) are filtered out (see Figure 31).
Input circuit
Eight-bit counter/timer circuits (page 44)
Sixteen-bit counter/timer circuits (page 50)
Output circuit (page 54)
Low-Voltage IR Microcontroller
Z86L88
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