EG87C51FA1SF76 Intel, EG87C51FA1SF76 Datasheet - Page 16

• Manufacturer Part Number: EG87C51FA1SF76
• Description: IC MCU 8-BIT 8K 16MHZ OTP 44MQFP
• Manufacturer: Intel
• Series: 87Cr

Specifications of EG87C51FA1SF76

• Core Processor: MCS 51
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SIO
• Peripherals: PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: OTP
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-MQFP, 44-PQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Other names: 864517

8XC51FX
PROGRAMMING THE EPROM OTP
To be programmed the part must be running with a
4 to 6 MHz oscillator (The reason the oscillator
needs to be running is that the internal bus is being
used to transfer address and program data to appro-
priate internal EPROM locations ) The address of an
EPROM location to be programmed is applied to
Port 1 and pins P2 0 - P2 4 of Port 2 while the code
byte to be programmed into that location is applied
to Port 0 The other Port 2 and 3 pins RST PSEN
and EA V
indicated in Table 4 ALE PROG is pulsed low to
program the code byte into the addressed EPROM
location The setup is shown in Figure 10
16
Program Code Data
Verify Code Data
Program Encryption
Array Address 0– 3FH
Program Lock
Bits
Read Signature Byte
See Table 4 for proper input on these pins
PP
Mode
should be held at the ‘‘Program’’ levels
Bit 1
Bit 2
Bit 3
RST
H
H
H
H
H
H
H
Table 4 EPROM Programming Modes
Figure 10 Programming the EPROM
PSEN
L
L
L
L
L
L
L
PROG
ALE
H
H
Normally EA V
fore ALE PROG is to be pulsed Then EA V
raised to V
EA V
age on the EA V
high level before a verify is attempted Waveforms
and detailed timing specifications are shown in later
sections of this data sheet
12 75V
12 75V
12 75V
12 75V
12 75V
EA
V
EA V
maximum specified V
time Even a narrow glitch above that voltage lev-
el can cause permanent damage to the device
The V
of glitches
H
H
PP
PP
is returned to a valid high voltage The volt-
PP
PP
PP
P2 6
pin must not be allowed to go above the
source should be well regulated and free
H
H
H
L
L
L
L
PP
ALE PROG is pulsed low and then
PP
is held at logic high until just be-
P2 7
pin must be at the valid EA V
H
H
H
H
L
L
L
NOTE
PP
level for any amount of
P3 3
H
H
H
H
H
L
L
272322 –20
P3 6
H
H
H
H
L
L
L
P3 7
PP
H
H
H
H
L
L
L
PP
is