MC68302EH16C Freescale Semiconductor, MC68302EH16C Datasheet - Page 171
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)
4.5.11.7 UART Control Characters and Flow Control
The UART has the capability to recognize special control characters. These characters may
be used when the UART functions in a message-oriented environment. Up to eight control
characters may be defined by the user in the control characters table. Each of these char-
acters may be either stored (written to the receive buffer, after which the current buffer is
closed and a new receive buffer taken) or rejected. If rejected, the character is written to the
received control character register (RCCR) in internal RAM, and a maskable interrupt is gen-
erated. This method is useful for notifying the user of the arrival of control characters (e.g.,
XOFF) that are not part of the received messages.
The UART uses a table of 16-bit entries to support control-character recognition. Each entry
consists of the control character, an end-of-table bit, and a reject character bit. The control
characters table is shown in Figure 4-19.
RCCR—Received Control Character Register
CHARACTER7–CHARACTER1—Control Character Value
MOTOROLA
OFFSET + 0
OFFSET + 2
OFFSET + 4
OFFSET + 6
OFFSET +
Upon a control character match for which the reject bit is set, the UART will write the con-
trol character into the RCCR and generate a maskable interrupt. The M68000 core must
process the interrupt and read the RCCR before a second control character arrives. Fail-
ure to do so will result in the UART overwriting the first control character.
These fields define control characters that should be compared to the incoming character.
For 7-bit characters, the eighth bit (bit 7) should be zero.
10
15
E
E
E
E
To disable all functions of the control characters and flow control
table, initialize CHARACTER1 to $8000 and CHARACTER8 to
$0000.
14
R
R
R
R
REA
13
Figure 4-19. UART Control Characters Table
12
I
CT
11
MC68302 USER’S MANUAL
10
0
NOTE
9
0
A
8
•
•
•
7
Communications Processor (CP)
CHARACTER1
CHARACTER2
CHARACTER3
CHARACTER8
RCCR
4-51
0
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