QADC64E Enhanced Mode Operation
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
14-65
Figure 14-46. Gated Mode, Continuous Scan Timing
14.6
QADC64E Integration Requirements
The QADC64E requires accurate, noise-free input signals for proper operation. This section discusses the
design of external circuitry to maximize QADC64E performance.
The QADC64E uses the external signals shown in
. There are 16 channel signals that can also
be used as general-purpose digital input/output signals. With external multiplexing MPC561/MPC563 can
support 41 analog inputs. In addition, there are three analog reference signals and two analog submodule
power signals, shared by each QADC64E module.
14.6.1
Port Digital Input/Output Signals
The sixteen port signals can be used as analog inputs, or as a bidirectional 16-bit digital input/output port.
Port A signals are referred to as PQA[7:0] when used as a bidirectional 8-bit digital input/output port.
These eight signals may be used for general-purpose digital input signals or push-pull digital output
signals. Port B signals are referred to as PQB[7:0] and operate the same as Port A.
Port A and B signals are connected to a digital input synchronizer during reads and may be used as general
purpose digital inputs when the applied voltages meet high voltage input (V
IH
) and low voltage input (V
IL
)
requirements. Refer to
Appendix F, “Electrical Characteristics
,” for more information on voltage
requirements.
Trig1
EOC
QS
CWP
CWPQ1
Q1
RES
0
8
LAST
CCW0
CCW1
R1
CCW3
R3
CF1
TOR1
CCW0
LAST
XX
CCW2
R2
CCW2
CCW1
CCW0
R0
CCW0
CCW3
R3
CCW3
CCW2
R2
CCW3
(gate)
Q restart
Q restart
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...