mcf52221 Freescale Semiconductor, Inc, mcf52221 Datasheet - Page 23

• Manufacturer Part Number: mcf52221
• Description: Mcf52223 Coldfire Microcontroller 32-bits Microcontrollers With Usb And Zigbee
• Manufacturer: Freescale Semiconductor, Inc

1.10
Table 10
1.11
Table 11
1.12
Table 12
Freescale Semiconductor
Transmit Serial Data
Receive Serial Data
DMA Timer Output
Request-to-Send
DMA Timer Input
describes the UART module signals.
describes the signals of the four DMA timer modules.
describes the signals of the Analog-to-Digital Converter.
Clear-to-Send
Signal Name
Signal Name
Analog Reference
ADC Sync Inputs
UART Module Signals
DMA Timer Signals
ADC Signals
Analog Supply
Analog Inputs
Signal Name
Output
Input
Abbreviation
Abbreviation
DTOUT
URXDn
Abbreviation
UTXDn
UCTSn
URTSn
DTIN
SYNCA /
SYNCB
AN[7:0]
V
V
V
V
DDA
SSA
RH
RL
MCF52223 ColdFire Microcontroller, Rev. 2
Table 10. UART Module Signals
Event input to the DMA timer modules.
Programmable output from the DMA timer modules.
Transmitter serial data outputs for the UART modules. The output is
held high (mark condition) when the transmitter is disabled, idle, or in
the local loopback mode. Data is shifted out, LSB first, on this pin at
the falling edge of the serial clock source.
Receiver serial data inputs for the UART modules. Data is received on
this pin LSB first. When the UART clock is stopped for power-down
mode, any transition on this pin restarts the clock.
Indication to the UART modules that they can begin data
transmission.
Automatic request-to-send outputs from the UART modules. This
signal can also be configured to be asserted and negated as a
function of the RxFIFO level.
Table 11. DMA Timer Signals
Inputs to the analog-to-digital converter.
Reference voltage high and low inputs.
Isolate the ADC circuitry from power supply noise.
These signals can initiate an analog-to-digital conversion
process.
Table 12. ADC Signals
Function
Function
Function
MCF52223 Family Configurations
I/O
—
—
I
I
I
I
I/O
I/O
O
O
O
I
I
I
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