参数资料
型号: AT27C256R-45JU
厂商: Atmel
文件页数: 8/13页
文件大小: 0K
描述: IC OTP 256KBIT 45NS 32PLCC
标准包装: 32
格式 - 存储器: EPROMs
存储器类型: EPROM OTP
存储容量: 256K (32K x 8)
速度: 45ns
接口: 并联
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 32-LCC(J 形引线)
供应商设备封装: 32-PLCC
包装: 管件
产品目录页面: 1457 (CN2011-ZH PDF)
6.
Rapid programming algorithm
A 100μs CE pulse width is used to program. The address is set to the first location. V CC is raised to 6.5V and V PP is raised to
13.0V. Each address is first programmed with one 100μs CE pulse without verification. Then a verification/reprogramming
loop is executed for each address. In the event a byte fails to pass verification, up to 10 successive 100μs pulses are
applied with a verification after each pulse. If the byte fails to verify after 10 pulses have been applied, the part is
considered failed. After the byte verifies properly, the next address is selected until all have been checked. V PP is then
lowered to 5.0V and V CC to 5.0V. All bytes are read again and compared with the original data to determine if the device
passes or fails.
Figure 6-1.
Rapid programming algorithm
8
Atmel AT27C256R
0014O–EPROM–10/11
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