S3C44B0X

Manufacturer Part NumberS3C44B0X
DescriptionBGA
ManufacturerSamsung
S3C44B0X datasheets
 


Specifications of S3C44B0X

Date_code02+  
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
Page 201
202
Page 202
203
Page 203
204
Page 204
205
Page 205
206
Page 206
207
Page 207
208
Page 208
209
Page 209
210
Page 210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
Page 204/488

Download datasheet (3Mb)Embed
PrevNext
S3C2400 RISC MICROPROCESSOR
Wake-Up from STOP Mode
When the S3C2400 is woken up from power down mode(STOP mode) by an EINT or a RTC alarm interrupt, the PLL
is turned on automatically. But S3C2400 is not in NORMAL mode yet. Because the configuration of the CLKCON is
ignored. So, the user has to set CLKCON register.
After the wake-up from STOP mode, the processor is not in NORMAL mode as explained above. The new value,
which reflects the new state, has to be re-written into the CLKCON register. Eventually, the processor state will be
changed from STOP mode to Normal mode.
Table 6-4. The Status of PLL and FCLK After Wake-Up
Mode before
Wake-up
STOP
SL_IDLE
IDLE
Signaling EINT For Wake-Up
The S3C2400 can be woken up from SL_IDLE mode or STOP mode only if the following conditions are met.
a) Level signal(H or L) or edge signal(rising or falling or both) is asserted on EINTn input pin.
b) EINTn pin has to be configured as EINT in the GPIO control register.
It is important to configure the EINTn in the GPIO control register as an external interrupt pins. For wake-up, we need
H/L level or rising/falling edge or both edge signals on EINTn pin.
Just after wake-up the corresponding EINTn pin will not be used for wake-up. This means that these pins can be
used as external interrupt request pins again.
Entering IDLE Mode
If CLKCON[2] is set to 1 to enter the IDLE mode, S3C2400 will enter into IDLE mode after some delay(until when the
power control logic receives ACK signal from the CPU wrapper).
PLL On/Off
The PLL can only be turned off for power saving in slow mode. If PLL is turned off in any other mode, MCU operation
is not guaranteed.
When the processor is in SLOW mode and tries to change its state into other state requiring that PLL be turned on,
then SLOW_BIT should be clear to move to another state after PLL stabilization.
PLL On/Off after
FCLK after Wake-up and
Wake- up
before the Lock Time
off
on
off
SLOW clock (the PLL lock
time is issued by S/W)
unchanged
unchanged
CLOCK & POWER MANAGEMENT
FCLK after the Lock
Time by Internal Logic
no clock
normal mode clock
unchanged
unchanged
6-21