Datasheet > ATF22V10B_03

ATF22V10B_03

更新时间： 2022-12-27 23:41:20

品牌	Logo	应用领域
爱特美尔 - ATMEL		/
页数	文件大小	规格书
15页	537K
描述
Highperformance EE PLD

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数据手册

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ATF22V10B_03 数据手册

ATF22V10B

Input Test Waveforms and

Measurement Levels

Output Test Loads

Commercial

Military

t_R, t_F< 3 ns

* All except -7 which is R2 = 300Ω

Pin Capacitance

f = 1 MHz, T = 25°C⁽¹⁾

Typ

Max

Units

Conditions

C_IN

V_IN= 0V

C_OUT

V_OUT= 0V

Note:

1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested.

Power-up Reset

The registers in the ATF22V10Bs are designed to reset

during power-up. At a point delayed slightly from V_CCcross-

ing V_RST, all registers will be reset to the low state. The

output state will depend on the polarity of the output buffer.

This feature is critical for state machine initialization. How-

ever, due to the asynchronous nature of reset and the

uncertainty of how V_CCactually rises in the system, the

following conditions are required:

1. The V_CCrise must be monotonic,

2. After reset occurs, all input and feedback setup times

must be met before driving the clock pin high, and

Parameter

Description

Typ

Max

Units

3. The clock must remain stable during t_PR

Power-up

Reset Time

t_PR

600

1,000

Preload of Registered Outputs

Power-up

Reset

Voltage

The ATF22V10B’s registers are provided with circuitry to

allow loading of each register with either a high or a low.

This feature will simplify testing since any state can be

forced into the registers to control test sequencing. A

JEDEC file with preload is generated when a source file

with vectors is compiled. Once downloaded, the JEDEC file

preload sequence will be done automatically by most of the

approved programmers after the programming.

V_RST

3.8

4.5

Security Fuse Usage

A single fuse is provided to prevent unauthorized copying

of the ATF22V10B fuse patterns. Once programmed, fuse

verify and preload are inhibited. However, the 64-bit User

Signature remains accessible.

The security fuse should be programmed last, as its effect

is immediate.

1 2 3 456 7 8...15

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