LM3S3749 Luminary Micro, Inc, LM3S3749 Datasheet - Page 694

• Manufacturer Part Number: LM3S3749
• Description: Lm3s3749 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Electrical Characteristics
24.1.5
24.1.6
24.1.7
24.2
24.2.1
694
Flash Memory Characteristics
Table 24-5. Flash Memory Characteristics
a. A program/erase cycle is defined as switching the bits from 1-> 0 -> 1.
Hibernation
Table 24-6. Hibernation Module DC Characteristics
USB
The Stellaris
Bus Specification Rev. 2.0” (full-speed and low-speed support). Some components of the USB
system are integrated within the LM3S3749 microcontroller and specific to the Stellaris
microcontroller design. These components are specified in Table 24-7 on page 694.
Table 24-7. USB Controller DC Electricals
AC Characteristics
Load Conditions
Unless otherwise specified, the following conditions are true for all timing measurements. Timing
measurements are for 4-mA drive strength.
Figure 24-1. Load Conditions
Parameter
Parameter
V
Parameter
R
LOWBAT
BIAS
T
PE
T
pin
T
ERASE
T
PROG
RET
ME
CYC
Parameter Name
Number of guaranteed program/erase cycles before failure
Data retention at average operating temperature of 85˚C
Word program time
Page erase time
Mass erase time
Parameter Name
Low battery detect voltage
Parameter Name
Value of the pull-down resistor on the USBRBIAS pin
®
USB controller DC electrical specifications are compliant with the “Universal Serial
GND
C
L
= 50 pF
Value
2.35
Preliminary
Unit
V
9.1K ± 1 %
Value
a
10,000
Min
200
10
20
20
Unit
Ω
100,000
Nom
-
-
-
-
Max
-
-
-
-
-
cycles
years
Unit
ms
ms
µs
June 02, 2008
®