M68HC11ERG Datasheet, PDF (29/60 Pages) Motorola, Inc – M68HC11E Series Programming Reference Guide

M68HC11ERG/AD
M68HC11E Series Registers
Analog Input to 8-Bit Result Translation Table
%⁽¹⁾
Volts⁽²⁾
Volts⁽³⁾
Bit 7
50%
2.500
1.65
6
25%
1.250
8.25
5
12.5%
0.625
0.4125
1. % of V_RH–V_RL
2. Voltages for V_RL = 0; V_RH = 5.0 V
3. Voltages for V_RL = 0; V_RH = 3.3 V
4
6.25%
0.3125
0.2063
3
3.12%
0.1562
0.1031
2
1.56%
0.0781
0.0516
1
0.78%
0.0391
0.0258
Bit 0
0.39%
0.0195
0.0129
Baud Rate Control Register (BAUD)
Address: $102B
Bit 7
6
Read:
TCLR
Write:
SCP2
Reset: 0
0
U = Unaffected
5
SCP1
0
4
SCP0
0
3
RCKB
0
2
SCR2
U
1
SCR1
U
Bit 0
SCR0
U
TCLR — Clear Baud Rate Counter (Test)
SCP[2:0] — SCI Baud Rate Prescaler Select
SCP2 applies to the MC68HC(7)11E20 only. When SCP2 = 1, SCP[1:0]
must equal 0. Any other values for SCP[1:0] are not decoded in the
prescaler and the results are unpredictable.
SCP
2^{(1) 1 0}
0 00
0 01
0 10
0 11
1 00
Divide
Internal
Clock By
1
3
4
13
39
4.0
62500
20833
15625
4800
1602
Crystal Frequency (MHz)
4.9152
8.0
8.3886
76800
25600
19200
5907
1969
125000
41667
31250
9600
3205
131072
43691
32768
10082
3361
1. Shaded areas apply to MC68HC(7)11E20 only.
RCKB — SCI Baud Rate Clock Check (TEST)
12.0
187500
62500
46875
14423
4808
MOTOROLA
M68HC11E Series Programming Reference Guide
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