参数资料
型号: LCMXO640C-3FTN256I
厂商: Lattice Semiconductor Corporation
文件页数: 25/88页
文件大小: 0K
描述: IC PLD 640LUTS 159I/O 256FTBGA
标准包装: 90
系列: MachXO
可编程类型: 系统内可编程
最大延迟时间 tpd(1): 4.9ns
电压电源 - 内部: 1.71 V ~ 3.465 V
宏单元数: 320
输入/输出数: 159
工作温度: -40°C ~ 100°C
安装类型: 表面贴装
封装/外壳: 256-LBGA
供应商设备封装: 256-FTBGA(17x17)
包装: 托盘
其它名称: 220-1056
Architecture
MachXO Family Data Sheet
Device Configuration
All MachXO devices contain a test access port that can be used for device configuration and programming.
The non-volatile memory in the MachXO can be configured in two different modes:
? In IEEE 1532 mode via the IEEE 1149.1 port. In this mode, the device is off-line and I/Os are controlled by
BSCAN registers.
? In background mode via the IEEE 1149.1 port. This allows the device to remain operational in user mode
while reprogramming takes place.
The SRAM configuration memory can be configured in three different ways:
? At power-up via the on-chip non-volatile memory.
? After a refresh command is issued via the IEEE 1149.1 port.
? In IEEE 1532 mode via the IEEE 1149.1 port.
Figure 2-22 provides a pictorial representation of the different programming modes available in the MachXO
devices. On power-up, the SRAM is ready to be configured with IEEE 1149.1 serial TAP port using IEEE 1532 pro-
tocols.
Leave Alone I/O
When using IEEE 1532 mode for non-volatile memory programming, SRAM configuration, or issuing a refresh
command, users may specify I/Os as high, low, tristated or held at current value. This provides excellent flexibility
for implementing systems where reconfiguration or reprogramming occurs on-the-fly.
TransFR (Transparent Field Reconfiguration)
TransFR (TFR) is a unique Lattice technology that allows users to update their logic in the field without interrupting
system operation using a single ispVM command. See TN1087, Minimizing System Interruption During Configura-
Security
The MachXO devices contain security bits that, when set, prevent the readback of the SRAM configuration and
non-volatile memory spaces. Once set, the only way to clear the security bits is to erase the memory space.
For more information on device configuration, please see details of additional technical documentation at the end
of this data sheet.
2-22
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