N87C511SF76 Intel, N87C511SF76 Datasheet - Page 17

• Manufacturer Part Number: N87C511SF76
• Description: IC MCU 8BIT 5V 16MHZ OTP 44PLCC
• Manufacturer: Intel
• Series: 87Cr

Specifications of N87C511SF76

• Rohs Status: RoHS non-compliant
• Core Processor: MCS 51
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SIO
• Number Of I /o: 32
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-PLCC
• Eeprom Size: -
• Data Converters: -
• Peripherals: -
• Other names: 810977

PROGRAMMING THE 87C51
The part must be running with a 4 MHz to 6 MHz
oscillator. The address of an EPROM location to be
programmed is applied to address lines while the
code byte to be programmed in that location is ap-
plied to data lines. Control and program signals must
be held at the levels indicated in Table 4. Normally
EA/V
ALE/PROG is to be pulsed. The EA/V
V
returned to a high (also refer to timing diagrams).
PP
Program Code Data
Verify Code Data
Program Encryption
Array Address 0 ±3F
Program Lock Bits
Read Signature Byte
See Table 4 for proper input on these pins
Exceeding the V
time could damage the device permanently. The
V
glitches.
, ALE/PROG is pulsed low and then EA/V
PP
PP
source must be well regulated and free of
is held at logic high until just before
Mode
PP
NOTE:
maximum for any amount of
Bit 1
Bit 2
Bit 3
RST
H
H
H
H
H
H
H
Table 4. EPROM Programming Modes
Figure 10. Programming the EPROM
PP
PSEN
is raised to
L
L
L
L
L
L
L
PP
PROG
is
ALE/
H
H
DEFINITION OF TERMS
ADDRESS LINES: P1.0±P1.7, P2.0±P2.5, P3.4 re-
spectively for A0 ±A14.
DATA LINES: P0.0±P0.7 for D0±D7.
CONTROL SIGNALS: RST, PSEN, P2.6, P2.7, P3.3,
P3.6, P3.7.
PROGRAM SIGNALS: ALE/PROG , EA/V
12.75V
12.75V
12.75V
12.75V
12.75V
V
EA/
H
H
PP
P2.6
H
H
H
L
L
L
L
87C51/80C51BH/80C31BH
P2.7
H
H
H
H
L
L
L
P3.3
H
H
H
H
H
L
L
272335 ±21
P3.6
H
H
H
H
L
L
L
PP
.
P3.7
H
H
H
H
L
L
L
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