isppac-powr1208p1 Lattice Semiconductor Corp., isppac-powr1208p1 Datasheet - Page 10

• Manufacturer Part Number: isppac-powr1208p1
• Description: In-system Programmable Power Supply Sequencing Controller And Precision Monitor
• Manufacturer: Lattice Semiconductor Corp.

Lattice Semiconductor
Table3-1. V
Table 3-1 shows all possible comparator trip point voltage settings. There are 384 available voltages, ranging from
0.680V to 5.932V, as well as a ‘near-ground’ monitor threshold of 80mV which can be used to determine if a power
supply rail has completely discharged to an OFF state. In addition to these 385 voltage monitor trip points, the user
can add external resistors to divide down the voltage and achieve virtually any voltage trip point. This allows the
capability to monitor higher voltages such and 12V, 15V, 24V, etc. Voltage monitor trip points are set in the graphical
user interface of PAC-Designer software by simple pull-down menus. The user simply selects the given range and
corresponding trip point value. Attenuation and reference values are set internally using E
internal to the device.
Theory Of Operation
The ispPAC-POWR1208P1 incorporates programmable voltage monitors along with digital inputs and outputs as
well as high voltage FET gate drivers to control MOSFETs for ramping up power supply rails. The 16 macrocell
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
0
1
2
3
4
5
6
7
8
9
0.680
0.684
0.688
0.692
0.696
0.700
0.704
0.708
0.712
0.716
0.720
0.724
0.728
0.732
0.736
0.740
0.744
0.748
0.752
0.756
0.760
0.764
0.768
0.772
0.776
0.780
0.784
0.787
0.791
0.795
0.799
0.803
MON
1
Trip Points
0.808
0.812
0.817
0.822
0.827
0.831
0.836
0.841
0.845
0.850
0.855
0.860
0.864
0.869
0.874
0.878
0.883
0.888
0.893
0.897
0.902
0.907
0.911
0.916
0.921
0.926
0.930
0.935
0.940
0.944
0.949
0.954
2
0.962
0.968
0.974
0.979
0.985
0.990
0.996
1.002
1.007
1.013
1.019
1.024
1.030
1.035
1.041
1.047
1.052
1.058
1.064
1.069
1.075
1.081
1.086
1.092
1.097
1.103
1.109
1.114
1.120
1.126
1.131
1.137
3
1.142
1.149
1.156
1.162
1.169
1.176
1.182
1.189
1.196
1.202
1.209
1.216
1.222
1.229
1.236
1.243
1.249
1.256
1.263
1.269
1.276
1.283
1.289
1.296
1.303
1.310
1.316
1.323
1.330
1.336
1.343
1.350
4
1.363
1.371
1.378
1.386
1.394
1.402
1.410
1.418
1.426
1.434
1.442
1.450
1.458
1.466
1.474
1.482
1.490
1.498
1.506
1.514
1.522
1.530
1.538
1.546
1.554
1.562
1.570
1.578
1.586
1.594
1.602
1.610
5
1.618
1.628
1.637
1.647
1.656
1.666
1.675
1.685
1.694
1.704
1.713
1.723
1.732
1.742
1.751
1.761
1.770
1.780
1.789
1.799
1.808
1.818
1.827
1.837
1.846
1.856
1.865
1.875
1.884
1.894
1.903
1.913
3-10
6
1.931
1.942
1.954
1.965
1.976
1.988
1.999
2.010
2.021
2.033
2.044
2.055
2.067
2.078
2.089
2.101
2.112
2.123
2.135
2.146
2.157
2.169
2.180
2.191
2.203
2.214
2.225
2.237
2.248
2.259
2.271
2.282
7
ispPAC-POWR1208P1 Data Sheet
2.289
2.302
2.316
2.329
2.342
2.356
2.369
2.383
2.396
2.410
2.423
2.437
2.450
2.464
2.477
2.490
2.504
2.517
2.531
2.544
2.558
2.571
2.585
2.598
2.612
2.625
2.638
2.652
2.665
2.679
2.692
2.706
8
2.724
2.741
2.757
2.773
2.789
2.805
2.821
2.837
2.853
2.869
2.885
2.901
2.917
2.933
2.949
2.965
2.981
2.997
3.013
3.029
3.045
3.061
3.077
3.093
3.109
3.125
3.141
3.157
3.173
3.189
3.205
3.221
9
2
3.241
3.260
3.279
3.298
3.318
3.337
3.356
3.375
3.394
3.413
3.432
3.451
3.470
3.489
3.508
3.527
3.547
3.566
3.585
3.604
3.623
3.642
3.661
3.680
3.699
3.718
3.737
3.756
3.776
3.795
3.814
3.833
CMOS configuration bits
10
4.221
4.246
4.270
4.295
4.320
4.345
4.370
4.394
4.419
4.444
4.469
4.494
4.518
4.543
4.568
4.593
4.618
4.642
4.667
4.692
4.717
4.742
4.766
4.791
4.816
4.841
4.866
4.890
4.915
4.940
4.965
4.990
11
5.017
5.046
5.076
5.105
5.135
5.164
5.194
5.224
5.253
5.283
5.312
5.342
5.371
5.401
5.430
5.460
5.489
5.519
5.548
5.578
5.607
5.637
5.666
5.696
5.726
5.755
5.785
5.814
5.844
5.873
5.903
5.932
12