MC68302EH16C Freescale Semiconductor, MC68302EH16C Datasheet - Page 150
MC68302EH16C
Manufacturer Part Number
MC68302EH16C
Description
IC MPU MULTI-PROTOCOL 132-PQFP
Manufacturer
Freescale Semiconductor
Datasheets
1.MC68302AG20C.pdf
(4 pages)
2.MC68302AG20C.pdf
(2 pages)
3.MC68302AG20C.pdf
(13 pages)
4.MC68302EH16C.pdf
(481 pages)
Specifications of MC68302EH16C
Processor Type
M683xx 32-Bit
Speed
16MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
132-MQFP, 132-PQFP
Controller Family/series
68K
Core Size
32 Bit
Ram Memory Size
1152Byte
Cpu Speed
16MHz
No. Of Timers
3
Embedded Interface Type
SCP, TDM
Digital Ic Case Style
PQFP
Rohs Compliant
Yes
Family Name
M68000
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
16MHz
Instruction Set Architecture
RISC
Supply Voltage 1 (typ)
5V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
132
Package Type
PQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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- MC68302AG20C PDF datasheet
- MC68302AG20C PDF datasheet #2
- MC68302AG20C PDF datasheet #3
- MC68302EH16C PDF datasheet #4
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- Download datasheet (2Mb)
Communications Processor (CP)
4-30
10 = Automatic echo
11 = Software operation (CTS, CD lines under software control)
for an internal clock, TCS and RCS may both be zero, or, for an external clock,
they may both be one. The other two combinations are not allowed in this mode.
In this mode, the channel automatically retransmits the received data on a bit-by-
bit basis. The receiver operates normally, but the transmitter simply retransmits
the received data. The CD pin must be asserted for the receiver to receive data,
and the CTS line is ignored. The data is echoed out the TXD pin with a few nano-
second delay from RXD. No transmit clock is required, and the ENT bit in the SCC
mode register does not have to be set.
In this mode, the CTS and CD lines are just inputs to the SCC event (SCCE) and
status (SCCS) registers. The SCC controller does not use these lines to enable/
disable reception and transmission, but leaves low (i.e., active) in this mode.
Transmission delays from RTS low are zero TCLKs (asynchronous protocols) or
one TCLK (synchronous protocols).
If external loopback is desired (i.e., external to the MC68302),
then the DIAG1–DIAG0 bits should be set for either normal or
software operation, and an external connection should be made
between the TXD and RXD pins. Clocks may be generated in-
ternally, externally, or an internally generated TCLK may be ex-
ternally connected to RCLK. If software operation is used, the
RTS, CD, and CTS pins need not be externally connected. If
normal operation is used, the RTS pin may be externally con-
nected to the CD pin, and the CTS pin may be grounded.
Do not use this mode for loopback operation of IDL in the Serial
Interface. Instead program the diag bits to Normal Operation,
and (1) assert the L1GR pin externally from the S/T chip, or (2)
configure the SDIAG1-0 bits in the SIMODE to Internal Loop-
back or Loopback Control.
The echo function may also be accomplished in software by re-
ceiving buffers from an SCC, linking them to transmit buffer de-
scriptors, and then transmitting them back out of that SCC.
The MC68302 provides several tools for enabling and disabling
transmission and/or reception. Choosing the right tool is applica-
tion and situation dependent. For the receiver, the tools are 1)
the empty bit in the receive buffer descriptor, 2) the ENR bit, and
3) the ENTER HUNT MODE command. For the transmitter, the
MC68302 USER’S MANUAL
NOTE
NOTE
NOTE
NOTE
MOTOROLA
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