MC908AP32CFBE Freescale, MC908AP32CFBE Datasheet - Page 173
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MC908AP32CFBE
Manufacturer Part Number
MC908AP32CFBE
Description
Manufacturer
Freescale
Datasheet
1.MC908AP32CFBE.pdf
(324 pages)
Specifications of MC908AP32CFBE
Cpu Family
HC08
Device Core Size
8b
Frequency (max)
8MHz
Interface Type
SCI/SPI
Total Internal Ram Size
2KB
# I/os (max)
32
Number Of Timers - General Purpose
4
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
On-chip Adc
8-chx10-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
44
Package Type
PQFP
Program Memory Type
Flash
Program Memory Size
32KB
Lead Free Status / RoHS Status
Compliant
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11.8.3 SCI Control Register 3
SCI control register 3:
R8 — Received Bit 8
T8 — Transmitted Bit 8
DMARE — DMA Receive Enable Bit
DMATE — DMA Transfer Enable Bit
ORIE — Receiver Overrun Interrupt Enable Bit
Freescale Semiconductor
•
•
•
When the SCI is receiving 9-bit characters, R8 is the read-only ninth bit (bit 8) of the received
character. R8 is received at the same time that the SCDR receives the other 8 bits.
When the SCI is receiving 8-bit characters, R8 is a copy of the eighth bit (bit 7). Reset has no effect
on the R8 bit.
When the SCI is transmitting 9-bit characters, T8 is the read/write ninth bit (bit 8) of the transmitted
character. T8 is loaded into the transmit shift register at the same time that the SCDR is loaded into
the transmit shift register. Reset has no effect on the T8 bit.
This read/write bit enables SCI error CPU interrupt requests generated by the receiver overrun bit, OR.
1 = DMA not enabled to service SCI receiver DMA service requests generated by the SCRF bit (SCI
0 = DMA not enabled to service SCI receiver DMA service requests generated by the SCRF bit (SCI
1 = SCTE DMA service requests enabled; SCTE CPU interrupt requests disabled
0 = SCTE DMA service requests disabled; SCTE CPU interrupt requests enabled
1 = SCI error CPU interrupt requests from OR bit enabled
0 = SCI error CPU interrupt requests from OR bit disabled
Stores the ninth SCI data bit received and the ninth SCI data bit to be transmitted
Enables these interrupts:
–
–
–
Parity error interrupts
Receiver overrun interrupts
Noise error interrupts
Framing error interrupts
receiver CPU interrupt requests enabled)
receiver CPU interrupt requests enabled)
Address:
The DMA module is not included on this MCU. Writing a logic 1 to DMARE
or DMATE may adversely affect MCU performance.
The DMA module is not included on this MCU. Writing a logic 1 to DMARE
or DMATE may adversely affect MCU performance.
Reset:
Read:
Write:
$0015
Bit 7
R8
U
Figure 11-11. SCI Control Register 3 (SCC3)
= Unimplemented
T8
U
6
MC68HC908AP Family Data Sheet, Rev. 4
DMARE
5
0
CAUTION
CAUTION
DMATE
4
0
U = Unaffected
ORIE
3
0
NEIE
2
0
FEIE
1
0
PEIE
Bit 0
0
I/O Registers
173
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