A 2D homogeneous Helmholtz case (u=sin(x)cos(y) with a square) with
% two Dirichlet edges (x=1,y=1) and two Neumann edges (x=0,y=0)
% by indirect symmetric BKM
S29NS-J
128 Megabit (8 M x 16-Bit), 64 Megabit (4 M x 16-Bit),
32 Megabit (2 M x 16-Bit), and 16 Megabit (1 M x 16 Bit),
110 nm CMOS 1.8-Volt only Simultaneous Read/Write,
Burst Mode Flash Memories
Data Sheet