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| 型号： | XA2C64A-8VQG44Q |
| 厂商： | Xilinx Inc |
| 文件页数： | 6/16页 |
| 文件大小： | 0K |
| 描述： | IC CPLD 64MCELL 33 I/O 44-VQFP |
| 产品培训模块： | CoolRunner-II CPLD Starter Kit |
| 标准包装： | 160 |
| 系列： | CoolRunner II |
| 可编程类型： | 系统内可编程 |
| 最大延迟时间 tpd(1)： | 6.7ns |
| 电压电源 - 内部： | 1.7 V ~ 1.9 V |
| 逻辑元件/逻辑块数目： | 4 |
| 宏单元数： | 64 |
| 门数： | 1500 |
| 输入/输出数： | 33 |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-TQFP |
| 供应商设备封装： | 44-VQFP（10x10） |
| 包装： | 托盘 |
XA2C64A CoolRunner-II Automotive CPLD
14
DS553 (v1.1) May 5, 2007
Product Specification
R
CoolRunner-II Automotive Requirements and Recommendations
Requirements
The following requirements are for all automotive applica-
tions:
1. Use a monotonic, fast ramp power supply to power up
CoolRunner-II . A VCC ramp time of less than 1 ms is
required.
2. Do not float I/O pins during device operation. Floating
I/O pins can increase ICC as input buffers will draw
1-2 mA per floating input. In addition, when I/O pins are
floated, noise can propagate to the center of the CPLD.
I/O pins should be appropriately terminated with
bus-hold or pull-up. Unused I/Os can also be configured
as CGND (programmable GND).
3. Do not drive I/O pins without VCC/VCCIO powered.
4. Sink current when driving LEDs. Because all Xilinx
CPLDs have N-channel pull-down transistors on
outputs, it is required that an LED anode is sourced
through a resistor externally to VCC. Consequently, this
will give the brightest solution.
5. Avoid pull-down resistors. Always use external pull-up
resistors if external termination is required. This is
because the CoolRunner-II Automotive CPLD, which
includes some I/O driving circuits beyond the input and
output buffers, may have contention with external
pull-down resistors, and, consequently, the I/O will not
switch as expected.
6. Do not drive I/Os pins above the VCCIO assigned to its
I/O bank.
a. The current flow can go into VCCIO and affect a user
voltage regulator.
b. It can also increase undesired leakage current
associated with the device.
Figure 12: VQ100 Package
VQG100
Top View
GND
I/O
(3)
V
CCIO2
I/O
NC
I/O
NC
I/O
V
CCIO2
NC
GND
TDO
NC
I/O
NC
I/O
V
CC
I/O
(2)
I/O
GND
I/O
V
CCIO1
I/O
NC
TDI
NC
TMS
TCK
I/O
NC
I/O
NC
I/O
GND
I/O
NC
I/O
NC
GND
I/O
NC
I/O
Vcc
I/O
NC
I/O
VCCIO1
I/O(1)
VAUX
I/O
NC
GND
I/O(2)
I/O
NC
1
2
3
4
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(1) - Global Output Enable
(2) - Global Clock
(3) - Global Set/Reset
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