N87C51RB24 Intel, N87C51RB24 Datasheet - Page 7

• 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

ONCE MODE
The ONCE (‘‘On-Circuit Emulation’’) Mode facilitates
testing and debugging of systems using the
8XC51RX without the 8XC51RX having to be re-
moved from the circuit The ONCE Mode is invoked
by
1) Pull ALE low while the device is in reset and
2) Hold ALE low as RST is deactivated
While the device is in ONCE Mode the Port 0 pins
float and the other port pins and ALE and PSEN are
weakly pulled high The oscillator circuit remains ac-
tive While the 8XC51RX is in this mode an emulator
or test CPU can be used to drive the circuit Normal
operation is restored when a normal reset is applied
8XC51RX EXPRESS
The Intel EXPRESS system offers enhancements to
the operational specifications of the MCS 51 family
of microcontrollers These EXPRESS products are
designed to meet the needs of those applications
NOTE
Contact distributor or local sales office to match EXPRESS prefix with proper device
EXAMPLES
P80C51RA indicates 80C51RA in a plastic package and specified for commercial temperature range without burn-in
TS87C51RC indicates 87C51RC in a QFP package and specified for extended temperature range without burn-in
PSEN is high
Prefix
P
N
S
TP
TN
TS
LP
LN
LS
Package
Plastic
Plastic
Plastic
PLCC
PLCC
PLCC
Type
QFP
QFP
QFP
Table 3 Prefix Identification
whose operating requirements exceed commercial
standards
The EXPRESS program includes the commercial
standard temperature range with burn-in and an ex-
tended temperature range with or without burn-in
With the commercial standard temperature range
operational characteristics are guaranteed over the
temperature range of 0 C to
tended temperature range option operational char-
acteristics are guaranteed over the range of
to
The optional burn-in is dynamic for a minimum time
of 168 hours at 125 C with V
following guidelines in MIL-STD-883 Method 1015
Package types and EXPRESS versions are identified
by a one- or two-letter prefix to the part number The
prefixes are listed in Table 3
For the extended temperature range option this
data sheet specifies the parameters which deviate
from their commercial temperature range limits
a
Temperature
Commercial
Commercial
Commercial
85 C
Extended
Extended
Extended
Extended
Extended
Extended
Range
a
CC
8XC51RA RB RC
70 C With the ex-
e
Burn-In
Yes
Yes
Yes
No
No
No
No
No
No
6 9V
g
b
0 25V
40 C
7