ATMEGA8515L8AU

Manufacturer Part NumberATMEGA8515L8AU
DescriptionTQFP44
ManufacturerATMEL Corporation
ATMEGA8515L8AU datasheet
 

Specifications of ATMEGA8515L8AU

Date_code10+  
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
Page 131
132
Page 132
133
Page 133
134
Page 134
135
Page 135
136
Page 136
137
Page 137
138
Page 138
139
Page 139
140
Page 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
202
203
204
205
206
207
208
209
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
Page 134/257

Download datasheet (3Mb)Embed
PrevNext
Data Modes
ATmega8515(L)
134
There are four combinations of SCK phase and polarity with respect to serial data,
which are determined by control bits CPHA and CPOL. The SPI data transfer formats
are shown in Figure 62 and Figure 63. Data bits are shifted out and latched in on oppo-
site edges of the SCK signal, ensuring sufficient time for data signals to stabilize. This is
clearly seen by summarizing Table 56 and Table 57, as done below:
Table 59. CPOL and CPHA Functionality
Leading Edge
CPOL=0, CPHA=0
Sample (Rising)
CPOL=0, CPHA=1
Setup (Rising)
CPOL=1, CPHA=0
Sample (Falling)
CPOL=1, CPHA=1
Setup (Falling)
Figure 62. SPI Transfer Format with CPHA = 0
SCK (CPOL = 0)
mode 0
SCK (CPOL = 1)
mode 2
SAMPLE I
MOSI/MISO
CHANGE 0
MOSI PIN
CHANGE 0
MISO PIN
SS
MSB first (DORD = 0)
MSB
Bit 6
LSB first (DORD = 1)
LSB
Bit 1
Figure 63. SPI Transfer Format with CPHA = 1
SCK (CPOL = 0)
mode 1
SCK (CPOL = 1)
mode 3
SAMPLE I
MOSI/MISO
CHANGE 0
MOSI PIN
CHANGE 0
MISO PIN
SS
MSB first (DORD = 0)
MSB
Bit 6
LSB first (DORD = 1)
LSB
Bit 1
Trailing Edge
Setup (Falling)
Sample (Falling)
Setup (Rising)
Sample (Rising)
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 2
Bit 3
Bit 4
Bit 5
SPI Mode
0
1
2
3
LSB
MSB
Bit 1
LSB
Bit 6
MSB
2512J–AVR–10/06