MC68HC11F1 Datasheet, PDF (48/68 Pages) Motorola, Inc – Technical Summary 8-Bit Microcontroller

Bit 0 — Not implemented. Reads always return zero and writes have no effect.
SCDR — Serial Communications Data Register
Bit 7
6
5
4
3
2
1
Bit 7
6
5
4
3
2
2
RESET:
I
I
I
I
I
I
I
$x02F
Bit 0
Bit 0
I
I = Indeterminate value
Reading SCDR retrieves the last byte received in the receive data buffer. Writing to SCDR loads the
transmit data buffer with the next byte to be transmitted.
MOTOROLA
48
MC68HC11F1/FC0
MC68HC11FTS/D