From bb796314060d12c96952b3379355d7eeb3567d00 Mon Sep 17 00:00:00 2001
From: Kier Davis <kierdavis@gmail.com>
Date: Mon, 16 May 2016 19:05:48 +0100
Subject: [PATCH] Add 28256/28C256/28HC256

---
 28256.yaml | 100 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 28256.yaml

diff --git a/28256.yaml b/28256.yaml
new file mode 100644
index 0000000..0cc2450
--- /dev/null
+++ b/28256.yaml
@@ -0,0 +1,100 @@
+---
+description: "32K x 8 parallel EEPROM"
+aliases:     [28C256, 28HC256]
+package:     DIP
+pincount:    28
+family:      "memory"
+datasheet:   "http://www.atmel.com/Images/doc0007.pdf"
+pins:
+  - num:  1
+    sym:  A__14
+    desc: address input
+  - num:  2
+    sym:  A__12
+    desc: address input
+  - num:  3
+    sym:  A__7
+    desc: address input
+  - num:  4
+    sym:  A__6
+    desc: address input
+  - num:  5
+    sym:  A__5
+    desc: address input
+  - num:  6
+    sym:  A__4
+    desc: address input
+  - num:  7
+    sym:  A__3
+    desc: address input
+  - num:  8
+    sym:  A__2
+    desc: address input
+  - num:  9
+    sym:  A__1
+    desc: address input
+  - num:  10
+    sym:  A__0
+    desc: address input
+  - num:  11
+    sym:  I/O__0
+    desc: data input/output
+  - num:  12
+    sym:  I/O__1
+    desc: data input/output
+  - num:  13
+    sym:  I/O__2
+    desc: data input/output
+  - num:  14
+    sym:  GND
+    desc: ground
+  - num:  15
+    sym:  I/O__3
+    desc: data input/output
+  - num:  16
+    sym:  I/O__4
+    desc: data input/output
+  - num:  17
+    sym:  I/O__5
+    desc: data input/output
+  - num:  18
+    sym:  I/O__6
+    desc: data input/output
+  - num:  19
+    sym:  I/O__7
+    desc: data input/output
+  - num:  20
+    sym:  ~CE
+    desc: chip enable (active low)
+  - num:  21
+    sym:  A__10
+    desc: address input
+  - num:  22
+    sym:  ~OE
+    desc: output enable (active low)
+  - num:  23
+    sym:  A__11
+    desc: address input
+  - num:  24
+    sym:  A__9
+    desc: address input
+  - num:  25
+    sym:  A__8
+    desc: address input
+  - num:  26
+    sym:  A__13
+    desc: address input
+  - num:  27
+    sym:  ~WE
+    desc: write enable (active low)
+  - num:  28
+    sym:  Vcc
+    desc: supply voltage
+notes:
+  - Data is written when ~CE is low and ~WE is low.
+  - Data is read when ~CE is low, ~OE is low, and ~WE is high.
+  - The input/output pins assume a high-impedance state if ~CE is high.
+...
+
+
+