MC68HC11E0CFNE3 Datasheet, PDF (64/242 Pages) Freescale Semiconductor, Inc – M68HC11E Family

Analog-to-Digital (A/D) Converter
3.10 A/D Converter Result Registers
These read-only registers hold an 8-bit conversion result. Writes to these registers have no effect. Data
in the A/D converter result registers is valid when the CCF flag in the ADCTL register is set, indicating a
conversion sequence is complete. If conversion results are needed sooner, refer to Figure 3-3, which
shows the A/D conversion sequence diagram.
Register name: Analog-to-Digital Converter Result Register 1 Address: $1031
Bit 7
6
5
4
3
2
Read: Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Write:
Reset:
Indeterminate after reset
Register name: Analog-to-Digital Converter Result Register 2 Address: $1032
Bit 7
6
5
4
3
2
Read: Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Write:
Reset:
Indeterminate after reset
Register name: Analog-to-Digital Converter Result Register 3 Address: $1033
Bit 7
6
5
4
3
2
Read: Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Write:
Reset:
Indeterminate after reset
Register name: Analog-to-Digital Converter Result Register 4 Address: $1034
Bit 7
6
5
4
3
2
Read: Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Write:
Reset:
Indeterminate after reset
= Unimplemented
1
Bit 1
1
Bit 1
1
Bit 1
1
Bit 1
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Figure 3-6. Analog-to-Digital Converter
Result Registers (ADR1–ADR4)
M68HC11E Family Data Sheet, Rev. 5.1
64
Freescale Semiconductor