MC68HC812A4 Datasheet, PDF (302/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

Analog-to-Digital Converter (ATD)
16.9 Interrupt Sources
Table 16-5. SPI Interrupt Sources
Interrupt
Source
Conversion sequence complete
Flag
Local CCR
Enable Mask
ASCIF ASCIE I bit
Vector
Address
$FFD2, $FFD3
NOTE:
The ASCIF flag is set only when a conversion sequence is completed
and ASCIE = 1 or interrupts on the analog-to-digital converter (ATD)
module are enabled.
16.10 General-Purpose Ports
Port AD is an input-only port. When the ATD is enabled, port AD is the
analog input port for the ATD. Setting the ATD power-up bit, ADPU, in
ATD control register 2 enables the ATD.
Port AD is available for general-purpose input when the ATD is disabled.
Clearing the ADPU bit disables the ATD.
16.11 Port AD Data Register
Address: $006F
Bit 7
6
5
4
3
2
1
Bit 0
Read: PAD7 PAD6 PAD5 PAD4 PAD3 PAD2 PAD1 PAD0
Write:
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 16-14. Port AD Data Input Register (PORTAD)
Read: Anytime; reads return logic levels on the PAD pins
Write: Has no meaning or effect
PAD7–PAD0 — Port AD Data Input Bits
MC68HC812A4 — Rev. 3.0
302
Analog-to-Digital Converter (ATD)
Advance Information
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