Philips pm2521 - Page 135

143
8.7. MEMORY
AND
MICROPROCESSOR
2716
16k (2kx8)
UV ERASABLE PROM
PIN
CONFIGURATION PIN
NAMES
>
o
1
_>
o
ADDRESSES
PD/PGM POWER
DOWN/PROG
RAM
CHIP SELECT
O
1
O
o OUTPUTS
DATA
OUTPUTS
BLOCK
DIAGRAM
Vcco
MODE
SELECTION
Pins
Mode
CE/PGM
(18)
OE
(20)
Vpp
(21)
Vcc
(24)
Outputs
(9-11,
13-17)
Read
VlL
V|L
+5
+5
‘^OUT
Standby
V|L
Don't
care +5 +5
High
Z
Program
Pulsed
V
to
V
V|H
+25
+5
•^IN
Program Verify
V|L
''iL
+25
+5
•^OUT
Program Inhibit
V|L
V|H
+25 +5
High Z