MC908SR12MFAER Freescale Semiconductor, MC908SR12MFAER Datasheet - Page 286
MC908SR12MFAER
Manufacturer Part Number
MC908SR12MFAER
Description
IC MCU 12K FLASH 4/8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908SR12MFAE.pdf
(404 pages)
Specifications of MC908SR12MFAER
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SCI
Peripherals
LVD, POR, PWM, Temp Sensor
Number Of I /o
31
Program Memory Size
12KB (12K x 8)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 14x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Other names
MC908SR12MFAER
MC908SR12MFAERTR
MC908SR12MFAERTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908SR12MFAER
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Serial Communications Interface (SCI)
16.9.5 SCI Status Register 2
Data Sheet
286
Address:
SCI status register 2 contains flags to signal the following conditions:
BKF — Break Flag Bit
RPF — Reception in Progress Flag Bit
Reset:
Read:
Write:
•
•
This clearable, read-only bit is set when the SCI detects a break
character on the RxD pin. In SCS1, the FE and SCRF bits are also
set. In 9-bit character transmissions, the R8 bit in SCC3 is cleared.
BKF does not generate a CPU interrupt request. Clear BKF by
reading SCS2 with BKF set and then reading the SCDR. Once
cleared, BKF can become set again only after logic 1s again appear
on the RxD pin followed by another break character. Reset clears the
BKF bit.
This read-only bit is set when the receiver detects a logic 0 during the
RT1 time period of the start bit search. RPF does not generate an
interrupt request. RPF is reset after the receiver detects false start bits
(usually from noise or a baud rate mismatch) or when the receiver
detects an idle character. Polling RPF before disabling the SCI
module or entering stop mode can show whether a reception is in
progress.
1 = Break character detected
0 = No break character detected
1 = Reception in progress
0 = No reception in progress
Break character detected
Incoming data
Serial Communications Interface (SCI)
$0017
Bit 7
0
Figure 16-14. SCI Status Register 2 (SCS2)
= Unimplemented
6
0
5
0
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
4
0
3
0
Freescale Semiconductor
2
0
BKF
1
0
Bit 0
RPF
0
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