Document No.: FT_000053
FT232R USB UART IC Datasheet Version 2.07
Clearance No.: FTDI# 38
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
RI = 1.5kΩ to
3V3OUT (D+) RI =
15KΩ to GND (D-)
I/O Pins Static Output
(High)
UVoh
2.8
3.6
V
RI = 1.5kΩ to
3V3OUT (D+) RI =
15kΩ to GND (D-)
I/O Pins Static Output
(Low)
UVol
0
0.3
V
Single Ended Rx
Threshold
UVse
UCom
UVDif
UDrvZ
0.8
0.8
0.2
26
2.0
2.5
V
V
Differential Common
Mode
Differential Input
Sensitivity
V
Driver Output
Impedance
29
44
Ohms
See Note 1
Table 5.12 USB I/O Pin (USBDP, USBDM) Characteristics
5.3 EEPROM Reliability Characteristics
The internal 1024 Bit EEPROM has the following reliability characteristics:
Parameter
Data Retention
Read / Write Cycle
Value
10
Unit
Years
Cycles
10,000
Table 5.13 EEPROM Characteristics
5.4 Internal Clock Characteristics
The internal Clock Oscillator has the following characteristics:
Value
Parameter
Unit
Minimum
11.98
Typical
12.00
Maximum
Frequency of Operation
(see Note 1)
12.02
MHz
Clock Period
Duty Cycle
83.19
45
83.33
50
83.47
55
ns
%
Table 5.14 Internal Clock Characteristics
Note 1: Equivalent to +/-1667ppm
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