U2739M-BFC ATMEL [ATMEL Corporation], U2739M-BFC Datasheet - Page 21

• Manufacturer Part Number: U2739M-BFC
• Description: DAB One-Chip Channel- and Source Decoder
• Manufacturer: ATMEL [ATMEL Corporation]

6.6
6.6.1
6.6.2
For time de-interleaving and further task an external
static random access memory of 4 MB is necessary. The
organization of the SRAM is 512 k
Rev. A1, 22-May-01
QFP144 QFP100
100
101
103
104
106
107
109
110
112
113
114
116
117
119
120
123
124
126
127
129
130
132
133
136
137
139
140
142
143
SRAM Interface
SRAM Interface Signal Description
SRAM Interface Descriptions
100
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
86
87
88
89
90
91
92
93
95
96
97
98
99
SRAM_D7
SRAM_D6
SRAM_D5
SRAM_D4
SRAM_D3
SRAM_D2
SRAM_D1
SRAM_D0
SRAM_WR
SRAM_OE
SRAM_A18
SRAM_A17
SRAM_A16
SRAM_A15
SRAM_A14
SRAM_A13
SRAM_A12
SRAM_A11
SRAM_A10
SRAM_A9
SRAM_A8
SRAM_A7
SRAM_A6
SRAM_A5
SRAM_A4
SRAM_A3
SRAM_A2
SRAM_A1
SRAM_A0
Pin Name
8 bit.
SRAM data bit 7
SRAM data bit 6
SRAM data bit 5
SRAM data bit 4
SRAM data bit 3
SRAM data bit 2
SRAM data bit 1
SRAM data bit 0
SRAM write signal
SRAM output enable
SRAM address bit 18
SRAM address bit 17
SRAM address bit 16
SRAM address bit 15
SRAM address bit 14
SRAM address bit 13
SRAM address bit 12
SRAM address bit 11
SRAM address bit 10
SRAM address bit 9
SRAM address bit 8
SRAM address bit 7
SRAM address bit 6
SRAM address bit 5
SRAM address bit 4
SRAM address bit 3
SRAM address bit 2
SRAM address bit 1
SRAM address bit 0
Signal Description
Due to the high data rates a fast SRAM with a access time
of 18 ns or below is necessary.
PRB04TZ
PRB04TZ
PRB04TZ
PRB04TZ
PRB04TZ
PRB04TZ
PRB04TZ
PRB04TZ
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
PRO04T
Pad Type
U2739M-B
inout
inout
inout
inout
inout
inout
inout
inout
Dir.
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
5 V Tol.
21 (69)
x
x
x
x
x
x
x
x