MC68302EH16C Freescale Semiconductor, MC68302EH16C Datasheet - Page 366
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
- Current page: 366 of 481
- Download datasheet (2Mb)
MC68302 Applications
D-16
* The handling of other events, e.g., CTS, CD IDL, BSY, is left
* the users as desired.
OthrlNT
***************Receiver portion of SCC1 interrupt routine****************
* This routine handles received (nonempty) BD: set data length = 0,
* clear status bits, set empty =1, and update PRD
* Clear the identified events as soon as possible, so no lost
* events occur during the interrupt handling
RX_INT
* While Not-Empty continue to process the next Rx BD, Else Exit.
NxtPRD
*
*
*** Check status in RXBD for erratic events ***
* If status bits are all 0 then continue, else SHUTDOWN the receiving
* process. This in turn shuts down the whole program, since all of
* Rx BDs will soon be unavailable (all BDs Empty = 8). Thus, the
* status of this BD will be saved for examination later.
* Status bits are all 0
Wrap_R
EXIT_RX
***************Conflrmer portion of SCC1 Interrupt routine ***************
* This routine handles transmitted (Not-ready) BD: set data length = 0,
* clear status bits, set ready = 1, and update CTD.
* Same as the Rx Interrupt handler, the first thing to do is to
* clear the identified events
TX_INT
* While Not-Ready continue to process the next Rx BD, Else Exit.
* The Ready bit should be cleared by the CP
NxtCTD
*
* Check data length, length must be > 0 to continue the confirming process
***Check status in TXBD for erratic events ***
* If status bits are all 0 then continue, else SHUTDOWN the confirming
* process. This in turn shuts down the whole program, since soon
CMPI.W
BNE.B
MOVE.W #$2000,1SR
RTE
MOVE.B
BTST.B
BNE.B
CMPI.B
BNE.B
CLR.W
CLR.B
BSET.B
BTST.B
BNE.B
ADDQ.W
BRA.B
LEA.L
BRA.B
JMP
MOVE.B
BTST.B
BNE.B
CMPI.W
BEQ.B
CLR.W
#0,D2
TX_ INT
#9,SCCE1
#EMPTY,ST_BD(A3)
EXIT_RX
#0,SS_BD(A3)
EXIT_RX
LN_BD(A3)
SS_BD(A3)
#EMPTY,ST_BD(A3)
#WRAP,ST_BD(A3)
Wrap_R
#SZ_BD,A3
NxtPRD
RXBD_01,A3
NxtPRD
CK_TX
#$1 2,SCCE1
#READY,ST BD(A1)
EXIT_TX
#0,LN_BD(A1)
EXIT_TX
LN_BD(A1)
MC68302 USER’S MANUAL
;If they are set
;Handle Transmitter's interrupt
;Clear SCC1 bit in ISR
;Clear RXF and RXB in SCCE1
;Test PRD -, Empty Bit
;Don't need to process if the
;Rx BD is still empty.
;Check status bits
;data length = 0
;Clear out all status bits
;Empty = 1
;Test Wrap bit
;Increment PRD to next BD
;Back to while loop
;Wrap back to the first Rx BD
;Back to the while loop
;Exit receiver potion of the handler
;Clear TXF and TXB in SCCE1
;Test PRD-> Ready Bit
;Don't need to process if the
;Tx BD is Ready.
;Test CTD –> data length
;data length = 0
to
MOTOROLA
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