LM3S3748 Datasheet, PDF (694/753 Pages) List of Unclassifed Manufacturers – Microcontroller

Electrical Characteristics
24.1.5
24.1.6
24.1.7
24.2
24.2.1
Flash Memory Characteristics
Table 24-5. Flash Memory Characteristics
Parameter Parameter Name
Min Nom Max Unit
PE_CYC Number of guaranteed program/erase cycles before failure^a 10,000 100,000 - cycles
T_RET Data retention at average operating temperature of 85˚C
10
-
- years
T_PROG Word program time
20
-
- µs
T_ERASE Page erase time
20
-
- ms
T_ME Mass erase time
200
-
- ms
a. A program/erase cycle is defined as switching the bits from 1-> 0 -> 1.
Hibernation
Table 24-6. Hibernation Module DC Electricals
Parameter Parameter Name
Value Unit
V_LOWBAT Low battery detect voltage 2.35 V
USB
The Stellaris^® USB controller DC electrical specifications are compliant with the “Universal Serial
Bus Specification Rev. 2.0” (full-speed and low-speed support). Some components of the USB
system are integrated within the LM3S3748 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
Parameter Parameter Name
Value Unit
R_BIAS
Value of the pull-down resistor on the USBRBIAS pin 9.1K ± 1 % Ω
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
pin
C_L = 50 pF
GND
694
April 08, 2008
Preliminary