mc68hc908gp20 Freescale Semiconductor, Inc, mc68hc908gp20 Datasheet - Page 276

• Manufacturer Part Number: mc68hc908gp20
• Description: M68hc08 Family Of 8-bit Microcontroller Units Mcus
• Manufacturer: Freescale Semiconductor, Inc

Advance Information
276
CAUTION:
CAUTION:
R8 — Received Bit 8
T8 — Transmitted Bit 8
DMARE — DMA Receive Enable Bit
The DMA module is not included on this MCU. Writing a logic 1 to
DMARE or DMATE may adversely affect MCU performance.
DMATE — DMA Transfer Enable Bit
The DMA module is not included on this MCU. Writing a logic 1 to
DMARE or DMATE may adversely affect MCU performance.
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.
1 = DMA not enabled to service SCI receiver DMA service requests
0 = DMA not enabled to service SCI receiver DMA service requests
1 = SCTE DMA service requests enabled; SCTE CPU interrupt
0 = SCTE DMA service requests disabled; SCTE CPU interrupt
generated by the SCRF bit (SCI receiver CPU interrupt
requests enabled)
generated by the SCRF bit (SCI receiver CPU interrupt
requests enabled)
requests disabled
requests enabled
MC68HC908GP20
Freescale Semiconductor
—
Rev 2.1