MC68HC11EA9 Datasheet, PDF (53/58 Pages) Motorola, Inc – 8 BIT HCMOS SINGLE CHIP MICROCONTOROLLER WITH A/D CONVERTER

Freescale Semiconductor, Inc.
PF — Parity Error Flag
Set if received data has incorrect parity. Cleared by SCSR1 read with PE set, followed by SCDR read.
SCSR2 — SCI Status Register 2
$102D
BIT 7
6
5
4
3
2
1
BIT 0
—
—
—
—
—
—
—
RAF
RESET:
0
0
0
0
0
0
0
0
Bits [7:1] — Not implemented
Always read zero
RAF — Receiver Active Flag (Read only)
0 = The receiver circuitry is idle
1 = A character is being received
SCDRH, SCDRL — SCI Data High, SCI Data Low
$102E
$102F
BIT 7
R8
R7/T7
6
T8
R6/T6
5
—
R5/T5
4
—
R4/T4
3
—
R3/T3
2
—
R2/T2
1
—
R1/T1
$102E, $102F
BIT 0
—
R0/T0
High
Low
R8 — Receiver Bit 8
Ninth serial data bit received when SCI is configured for nine data bit operation (M = 1).
T8 — Transmitter Bit 8
Ninth serial data bit transmitted when SCI is configured for nine data bit operation (M = 1).
Bits [5:0] — Not implemented
Always read zero
R/T[7:0] — Receiver/Transmitter Data Bits 7 to 0
SCI data is double buffered in both directions.
MC68HC11EA9
MC68HC11EA9TS/D
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