mc68hc711d3 Freescale Semiconductor, Inc, mc68hc711d3 Datasheet - Page 94

• Manufacturer Part Number: mc68hc711d3
• Description: M Hc11 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Programmable Timer
8.4.4 Output Compare 1 Data Register
Use this register with OC1 to specify the data that is to be stored on the affected pin of port A after a
successful OC1 compare. When a successful OC1 compare occurs, a data bit in OC1D is stored in the
corresponding bit of port A for each bit that is set in OC1M.
If OC1Mx is set, data in OC1Dx is output to port A bit x on successful OC1 compares.
Bits 2–0 — Not implemented; always read 0.
8.4.5 Timer Counter Register
The 16-bit read-only timer count register (TCNT) contains the prescaled value of the 16-bit timer. A full
counter read addresses the most significant byte (MSB) first. A read of this address causes the least
significant byte (LSB) to be latched into a buffer for the next CPU cycle so that a double-byte read returns
the full 16-bit state of the counter at the time of the MSB read cycle.
In normal modes, TCNT is read-only.
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Address:
Address: $000E — TCNT High
Address: $000F — TCNT Low
Reset:
Reset:
Reset:
Read:
Read:
Read:
Write:
Write:
Write:
OC1D7
$000D
Bit 15
Bit 15
Bit 7
Bit 7
Bit 7
0
0
0
Figure 8-9. Output Compare 1 Data Register (OC1D)
Figure 8-10. Timer Counter Registers (TCNT)
= Unimplemented
OC1D6
Bit 14
Bit 6
14
6
0
0
6
0
MC68HC711D3 Data Sheet, Rev. 2.1
OC1D5
Bit 13
Bit 5
13
5
0
0
5
0
OC1D4
Bit 12
Bit 4
12
4
0
0
4
0
OC1D3
Bit 11
Bit 3
11
3
0
0
3
0
Bit 10
Bit 2
10
2
0
0
0
2
0
Bit 9
Bit 1
1
0
0
9
0
1
0
Freescale Semiconductor
Bit 08
Bit 0
Bit 8
Bit 0
Bit 0
0
0
0
0