Array of cross point memory cells individually comprising a select device and a programmable device

An array of memory cells comprising:

• spaced lower first lines, spaced upper second lines which cross the first lines, and an individual memory cell between the first lines and the second lines where such cross, the individual memory cells comprising:
• a select device and a programmable device in series with each other, the select device being proximate and directly electrically coupled to one of the first lines, the programmable device being proximate and directly electrically coupled to one of the second lines;
• and
• the programmable device comprising:
• a first pillar electrode elevationally over and directly electrically coupled to the select device, the first pillar electrode comprising elevationally-elongated conductive material and comprising a top and opposing sidewalls;
• programmable material laterally outward of the opposing sidewalls and elevationally over the top of the first pillar electrode;
• and
• a second electrode outward of the programmable material laterally over the opposing sidewalls of the first pillar electrode, the second electrode being directly electrically coupled to the one second line.

An array of memory cells comprising:

• spaced lower first lines, spaced upper second lines which cross the first lines, and an individual memory cell between the first lines and the second lines where such cross, the individual memory cells comprising:
• a select device and a programmable device in series with each other, the select device being proximate and directly electrically coupled to one of the second lines, the programmable device being proximate and directly electrically coupled to one of the first lines;
• and
• the programmable device comprising:
• a first pillar electrode elevationally over and directly electrically coupled to the one first line, the first pillar electrode comprising a top and opposing sidewalls;
• programmable material laterally outward of the opposing sidewalls and elevationally over the top of the first pillar electrode;
• and
• a second electrode outward of the programmable material laterally over the opposing sidewalls of the first pillar electrode, the second electrode being directly electrically coupled to the select device.