FT221XS-R datasheet(25/45 Pages) FTDI

部件名	FT221XS-R

功能描述	Future Technology Devices International Ltd.

PDF	45 Pages

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制造商	FTDI [Future Technology Devices International Ltd.]

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FT221X USB 8-BIT SPI/FT1248 IC Datasheet

Version 1.3

Document No.: FT_000630 Clearance No.: FTDI# 263

Parameter

Description

Minimum

Typical

Maximum

Units

Conditions

Voh

Output Voltage High

VCC-0.2

Vol

Output Voltage Low

0.2

Vil

Input low Switching

Threshold

0.8

Vih

Input High Switching

Threshold

2.0

Table 6.7 USB I/O Pin (USBDP, USBDM) Characteristics

6.4 MTP Memory Reliability Characteristics

The internal 2048 Byte MTP memory has the following reliability characteristics:

Parameter

Value

Unit

Data Retention

Years

Write Cycle

2,000

Cycles

Read Cycle

Unlimited

Cycles

Table 6.8 MTP Memory Characteristics

6.5 Internal Clock Characteristics

The internal Clock Oscillator has the following characteristics:

Parameter

Value

Unit

Minimum

Typical

Maximum

Frequency of Operation

(see Note 1)

11.98

12.00

12.02

MHz

Clock Period

83.19

83.33

83.47

Duty Cycle

Table 6.9 Internal Clock Characteristics

Note 1: Equivalent to +/-1667ppm

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