Description
for QFP-44
T ABLE 1: PIN DESCRIPTIONS FOR QFP-44/
QFP - 44
Name
I/O
Function
QFP - 44
Name
I/O
Function
24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
P0.4/AD4
P0.5/AD5
P0.6/AD6
P0.7/AD7 #EA
P2.7/A15
P0.3/AD3 P0.2/AD2 P0.1/AD1 P0.0/AD0 VDD NC T2/P1.0 T2EX/P1.1 P1.2 P1.3 P1.4
3 3 3 4
P2.6/A14 P2.5/A13
2 32 2
#PSEN
P1.5 P1.6 P1.7 RES RXD P3.0 NC TXD P3.1 #INT0 P3.2 #INT1 P3.3 T0 P3.4 T1 P3.5 #WR P3.6 #
Features
- The VRS51x540 is available in 5 (VRS51C540) and 3.3 (VRS51L540) volt versions in PLCC-44, QFP-44 and DIP-40 packages. The VRS51x540 devices operate over the entire industrial temperature range. The Flash memory can be programmed using programmers available from Ramtron or other 3rd party commercial programmers. FIGURE 1: VRS51X540.