Z86D86 Datasheet, PDF (56/80 Pages) Zilog, Inc. – 28-Pin Low-Voltage OTP Microcontroller

Z86D86
28-Pin Low-Voltage OTP Microcontroller
48
put into LO8; if it is a negative edge, HI8. From that point, one of the edge-detect
status bits (CTR1, D1, D0) is set, and an interrupt can be generated if enabled
(CTR0, D2). Meanwhile, T8 is loaded with FFh and starts counting again. If T8
reaches 0, the time-out status bit (CTR0, D5) is set, an interrupt can be generated
if enabled (CTR0, D1), and T8 continues counting from FFh (see Figure 37 and
Figure 38).
T8 (8-Bit)
Count Capture
T8_Enable
(Set by User)
No
Yes
Edge
No
Present
Yes
Pos
T8 LO8
What Kind
of Edge
Neg
T8 HI8
FFh T8
Figure 37. Demodulation Mode Count Capture Flowchart
PS008905-0105
PRELIMINARY