AT27C256R-70RU Atmel, AT27C256R-70RU Datasheet - Page 2

• Manufacturer Part Number: AT27C256R-70RU
• Description: IC OTP 256KBIT 70NS 28SOIC
• Manufacturer: Atmel

Specifications of AT27C256R-70RU

• Format - Memory: EPROMs
• Memory Type: OTP EPROM
• Memory Size: 256K (32K x 8)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (8.69mm width)
• Density: 256Kb
• Organization: 32Kx8
• Interface Type: Parallel
• Bus Type: Parallel
• In System Programmable: External
• Access Time (max): 70ns
• Package Type: SOIC
• Reprogramming Technique: OTP
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 20mA
• Pin Count: 28
• Mounting: Surface Mount
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2. Pin Configurations
2.1
2.2
Note:
2
Pin Name
A0 - A14
O0 - O7
CE
OE
NC
28-lead PDIP/SOIC Top View
32-lead PLCC Top View
PLCC Package Pins 1 and 17 are Don’t Connect.
AT27C256R
NC
O0
A6
A5
A4
A3
A2
A1
A0
GND
VPP
A12
O0
O1
O2
5
6
7
8
9
10
11
12
13
A7
A6
A5
A4
A3
A2
A1
A0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
29
28
27
26
25
24
23
22
21
VCC
A14
A13
A8
A9
A11
OE
A10
CE
O7
O6
O5
O4
O3
A8
A9
A11
NC
OE
A10
CE
O7
O6
Function
Addresses
Outputs
Chip Enable
Output Enable
No Connect
2.3
VCC
28-lead TSOP Top View – Type 1
VPP
A11
A13
A14
A12
OE
A9
A8
A7
A6
A5
A4
A3
8
9
10
11
12
13
14
1
2
3
4
5
6
7
28
27
26
25
24
23
22
21
20
19
18
17
16
15
0014M–EPROM–12/07
A10
CE
O7
O6
O5
O4
O3
GND
O2
O1
O0
A0
A1
A2