MC908QB4MDTE Freescale Semiconductor, MC908QB4MDTE Datasheet - Page 125

• Manufacturer Part Number: MC908QB4MDTE
• Description: IC MCU 8BIT 4K FLASH 16-TSSOP
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC908QB4MDTE

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: LVD, POR, PWM
• Number Of I /o: 13
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 10x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-TSSOP
• Processor Series: HC08QB
• Core: HC08
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: 3-Wire, ESCI, SPI, UART
• Number Of Programmable I/os: 13
• Number Of Timers: 4
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: FSICEBASE, M68CBL05AE, DEMO908QB8, DEMO908QC16
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 10 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

RWU — Receiver Wakeup Bit
SBK — Send Break Bit
13.8.3 ESCI Control Register 3
ESCI control register 3 (SCC3):
R8 — Received Bit 8
T8 — Transmitted Bit 8
Freescale Semiconductor
This read/write bit puts the receiver in a standby state during which receiver interrupts are disabled.
The WAKE bit in SCC1 determines whether an idle input or an address mark brings the receiver out
of the standby state and clears the RWU bit.
Setting and then clearing this read/write bit transmits a break character followed by a 1. The 1 after the
break character guarantees recognition of a valid start bit. If SBK remains set, the transmitter
continuously transmits break characters with no 1s between them.
•
•
When the ESCI 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 ESCI is receiving 8-bit characters, R8 is a copy of the eighth bit (bit 7).
When the ESCI 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.
1 = Standby state
0 = Normal operation
1 = Transmit break characters
0 = No break characters being transmitted
Stores the ninth ESCI data bit received and the ninth ESCI data bit to be transmitted.
Enables these interrupts:
–
–
–
–
Receiver overrun
Noise error
Framing error
Parity error
Reset:
Read:
Write:
Writing to the RE bit is not allowed when the enable ESCI bit (ENSCI) is
clear. ENSCI is in ESCI control register 1.
Do not toggle the SBK bit immediately after setting the SCTE bit. Toggling
SBK before the preamble begins causes the ESCI to send a break
character instead of a preamble.
Bit 7
R8
U
Figure 13-11. ESCI Control Register 3 (SCC3)
= Unimplemented
T8
6
0
MC68HC908QB8 Data Sheet, Rev. 3
R
5
0
NOTE
NOTE
R
R
4
0
= Reserved
ORIE
3
0
NEIE
U = Unaffected
2
0
FEIE
1
0
PEIE
Bit 0
0
Registers
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