参数资料
型号: EPM7064B
厂商: Altera Corporation
英文描述: Programmable Logic Device
中文描述: 可编程逻辑器件
文件页数: 17/66页
文件大小: 421K
代理商: EPM7064B
Altera Corporation
17
MAX 7000B Programmable Logic Device Data Sheet
By combining the pulse and shift times for each of the programming
stages, the program or verify time can be derived as a function of the
TCK
frequency, the number of devices, and specific target device(s). Because
different ISP-capable devices have a different number of EEPROM cells,
both the total fixed and total variable times are unique for a single device.
Programming a Single MAX 7000B Device
The time required to program a single MAX 7000B device in-system can
be calculated from the following formula:
where:
t
PROG
= Programming time
= Sum of the fixed times to erase, program, and
verify the EEPROM cells
Cycle
PTCK
= Number of
TCK
cycles to program a device
f
TCK
=
TCK
frequency
t
PPULSE
The ISP times for a stand-alone verification of a single MAX 7000B device
can be calculated from the following formula:
where:
t
VER
= Verify time
= Sum of the fixed times to verify the EEPROM cells
Cycle
VTCK
= Number of
TCK
cycles to verify a device
t
VPULSE
tPROG
tPPULSE
CyfTCK
+
=
tVER
tVPULSE
CyfTCK
+
=
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