Datasheet

C515C
Data Sheet 61 2003-02
A0/A8 -
A7/A15
38 - 45 I Address lines
P2.0-7 are used as multiplexed address input lines
A0-A7 and A8-A15. A8-A15 must be latched with PALE.
PSEN
47 I Program store enable
This input must be at static “0” level during the whole
programming mode.
PROG
48 I Programming mode write strobe
This input is used in programming mode as a write
strobe for OTP memory program and lock bit write
operations. During basic programming mode selection
a low level must be applied to PROG
.
EA
/V
PP
49 I External Access / Programming voltage
This pin must be at 11.5 V (
V
PP
) voltage level during
programming of an OTP memory byte or lock bit. During
an OTP memory read operation this pin must be at high
level (
V
IH
). This pin is also used for basic programming
mode selection. At basic programming mode selection
a low level must be applied to EA
/V
PP
.
D0 - 7 52 - 58 I/O Data lines 0-7
During programming mode, data bytes are read or
written from or to the C515C-8E via the bidirectional
D0-7 which are located at port 0.
V
SS
13, 34, 35,
51, 70
– Circuit ground potential
must be applied to these pins in programming mode.
V
DD
14, 32, 33,
50, 69
– Power supply terminal
must be applied to these pins in programming mode.
N.C. 2-12, 20-31,
46, 60-67,
69, 71-80
– Not Connected
These pins should not be connected in programming
mode.
1)
I = Input; O = Output
Table 12 Pin Definitions and Functions in Programming Mode (cont’d)
Symbol Pin Number I/O
1)
Function