N87C51RB24 Intel, N87C51RB24 Datasheet - Page 9

• Manufacturer Part Number: N87C51RB24
• Description: IC MCU 8BIT 16K 24MHZ OTP 44PLCC
• Manufacturer: Intel
• Series: 87Cr

Specifications of N87C51RB24

• Rohs Status: RoHS non-compliant
• Core Processor: MCS 51
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: SIO
• Peripherals: WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: OTP
• Ram Size: 512 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: -
• Other names: 807306

DC CHARACTERISTICS
All parameter values apply to all devices unless otherwise indicated
NOTES
1 Capacitive loading on Ports 0 and 2 may cause noise pulses above 0 4V to be superimposed on the V
Ports 1 2 and 3 The noise is due to external bus capacitance discharging into the Port 0 and Port 2 pins when these pins
change from 1 to 0 In applications where capacitive loading exceeds 100 pF the noise pulses on these signals may exceed
0 8V It may be desirable to qualify ALE or other signals with a Schmitt Triggers or CMOS-level input logic
2 Capacitive loading on Ports 0 and 2 cause the V
address lines are stabilizing
3 See Figures 6–9 for test conditions Minimum V
4 Typicals are based on a limited number of samples and are not guaranteed The values listed are at room temperature
and 5V
5 Under steady state (non-transient) conditions I
If I
than the listed test conditions
Symbol
V
V
I
I
I
RRST
CIO
I
IL
LI
TL
CC
OL
OH1
OH2
exceeds the test condition V
Maximum I
Maximum I
Maximum total I
Output High Voltage
(Port 0 in External Bus Mode)
Output High Voltage
(RST)
Logical 0 Input Current
(Ports 1 2 and 3)
Input leakage Current (Port 0)
Logical 1 to 0 Transition Current
(Ports 1 2 and 3)
RST Pulldown Resistor
Pin Capacitance
Power Supply Current
Commercial
Express
Active Mode
Idle Mode
Power Down Mode
OL
OL
at 12 MHz (Figure 5)
at 16 MHz
at 20 MHz
at 24 MHz
at 12 MHz (Figure 5)
at 16 MHz
at 20 MHz
at 24 MHz
per port pin
per 8-bit port
OL
for all output pins
Parameter
Ports 1 2 and 3
OL
(Over Operating Conditions) (Continued)
Port 0
may exceed the related specification Pins are not guaranteed to sink current greater
26 mA
10mA
15 mA
71 mA
OL
CC
OH
must be externally limited as follows
for Power Down is 2V
V
V
V
on ALE and PSEN to drop below the 0 9 V
0 75 V
0 5 V
0 9 V
CC
CC
CC
Min
40
b
b
b
CC
CC
0 3
0 7
1 5
CC
(Note 4)
Typ
10
15
5
5
b
b
b
g
Max
11 5
13 5
225
7 5
9 5
30
38
47
56
75
675
775
50
10
Unit
K
mA
mA
mA
mA
mA
mA
mA
mA
pF
V
V
V
V
V
V
A
A
A
A
A
CC
8XC51RA RB RC
specification when the
Test Conditions
I
I
I
I
I
I
V
V
V
(Note 3)
OH
OH
OH
OH
OH
OH
IN
IN
IN
1 MHz 25 C
e b
e b
e b
e b
e b
e b
e
e
e
OL
s of ALE and
0 45V
V
2V
IL
200 A
3 2 mA
7 0 mA
800 A
300 A
80 A
or V
IH
9