P87C54X2BA,512 NXP Semiconductors, P87C54X2BA,512 Datasheet - Page 22

IC 80C51 MCU 256 RAM 44PLCC

P87C54X2BA,512

Manufacturer Part Number
P87C54X2BA,512
Description
IC 80C51 MCU 256 RAM 44PLCC
Manufacturer
NXP Semiconductors
Series
87Cr
Datasheet

Specifications of P87C54X2BA,512

Core Processor
8051
Core Size
8-Bit
Speed
33MHz
Connectivity
EBI/EMI, UART/USART
Peripherals
POR
Number Of I /o
32
Program Memory Size
16KB (16K x 8)
Program Memory Type
OTP
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-PLCC
Processor Series
P87C5x
Core
80C51
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
UART
Maximum Clock Frequency
33 MHz
Number Of Programmable I/os
32
Number Of Timers
3
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
 Details
Other names
935270161512
P87C54X2BA
P87C54X2BA

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
P87C54X2BA,512
Manufacturer:
NXP
Quantity:
193
Part Number:
P87C54X2BA,512
Manufacturer:
NXP Semiconductors
Quantity:
10 000
Philips Semiconductors
Table 5.
Summary Of Baud Rate Equations
Timer 2 is in baud rate generating mode. If Timer 2 is being clocked
through pin T2(P1.0) the baud rate is:
If Timer 2 is being clocked internally, the baud rate is:
Where:
To obtain the reload value for RCAP2H and RCAP2L, the above
equation can be rewritten as:
2003 Jan 24
80C51 8-bit microcontroller family
4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),
low power, high speed (30/33 MHz)
n = 16 in 6-clock mode, 32 in 12-clock mode.
f
12-clk
Baud Rate + Timer 2 Overflow Rate
Baud Rate +
RCAP2H, RCAP2L + 65536 *
mode
375 K
OSC
9.6 K
4.8 K
2.4 K
1.2 K
300
110
300
110
Baud Rate
= Oscillator Frequency
Timer 2 Generated Commonly Used
Baud Rates
19.2 K
mode
750 K
6-clk
9.6 K
4.8 K
2.4 K
[n
600
220
600
220
[65536 * (RCAP2H, RCAP2L)]]
Osc Freq
16
12 MHz
12 MHz
12 MHz
12 MHz
12 MHz
12 MHz
12 MHz
6 MHz
6 MHz
f
OSC
n
Baud Rate
f
RCAP2H
OSC
FD
FF
FF
FF
FF
FE
FB
F2
F9
Timer 2
RCAP2L
FF
D9
B2
C8
1E
AF
8F
64
57
22
1. Capture/reload occurs only on timer/counter overflow.
2. Capture/reload occurs on timer/counter overflow and a 1-to-0
Timer/Counter 2 Set-up
Except for the baud rate generator mode, the values given for
T2CON do not include the setting of the TR2 bit. Therefore, bit TR2
must be set, separately, to turn the timer on. See Table 6 for set-up
of Timer 2 as a timer. Also see Table 7 for set-up of Timer 2 as a
counter.
Table 6. Timer 2 as a Timer
Table 7. Timer 2 as a Counter
NOTES:
MODE
16-bit Auto-Reload
16-bit Capture
Baud rate generator receive
and transmit same baud rate
Receive only
Transmit only
MODE
16-bit
Auto-Reload
transition on T2EX (P1.1) pin except when Timer 2 is used in the
baud rate generator mode.
P80C3xX2; P80C5xX2;
INTERNAL
CONTROL
(Note 1)
00H
01H
34H
24H
14H
INTERNAL
CONTROL
(Note 1)
02H
03H
T2CON
TMOD
P87C5xX2
EXTERNAL
CONTROL
(Note 2)
08H
09H
36H
26H
16H
EXTERNAL
CONTROL
(Note 2)
Product data
0AH
0BH

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