P89V52X2FA,512 NXP Semiconductors, P89V52X2FA,512 Datasheet - Page 24
![IC 80C51 MCU FLASH 8K 44-PLCC](/photos/6/98/69845/568-44-plcc_sot187-2_sml.jpg)
P89V52X2FA,512
Manufacturer Part Number
P89V52X2FA,512
Description
IC 80C51 MCU FLASH 8K 44-PLCC
Manufacturer
NXP Semiconductors
Series
89Vr
Datasheet
1.P89V52X2FA512.pdf
(57 pages)
Specifications of P89V52X2FA,512
Program Memory Type
FLASH
Program Memory Size
8KB (8K x 8)
Package / Case
44-PLCC
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
UART/USART
Peripherals
POR
Number Of I /o
32
Eeprom Size
192 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Processor Series
P89V5x
Core
80C51
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
UART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
32
Number Of Timers
3
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Minimum Operating Temperature
- 55 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
OM11011 - BOARD FOR P89V52X2 44-TQFP622-1017 - BOARD 44-ZIF PLCC SOCKET622-1012 - BOARD FOR P89V52X2 44-TQFP622-1008 - BOARD FOR LPC9103 10-HVSON622-1002 - USB IN-CIRCUIT PROG LPC9XX
Data Converters
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
568-4249-5
935282528512
P89V52X2FA
935282528512
P89V52X2FA
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
P89V52X2FA,512
Manufacturer:
NXP Semiconductors
Quantity:
10 000
NXP Semiconductors
P89V52X2_3
Product data sheet
used as the UART transmit baud rate generator. RCLK has the same effect for the UART
receive baud rate. With these two bits, the serial port can have different receive and
transmit baud rates – Timer 1 or Timer 2.
Figure 17
The baud rate generation mode is like the auto-reload mode, when a rollover in TH2
causes the Timer 2 registers to be reloaded with the 16-bit value in registers RCAP2H and
RCAP2L, which are preset by software.
The baud rates in modes 1 and 3 are determined by Timer 2’s overflow rate given below:
The timer can be configured for either ‘timer’ or ‘counter’ operation. In many applications,
it is configured for ‘timer' operation (C/T2 = 0). Timer operation is different for Timer 2
when it is being used as a baud rate generator.
Usually, as a timer it would increment every machine cycle (i.e.,
frequency). As a baud rate generator, it increments at the oscillator frequency. Thus the
baud rate formula is as follows:
Where: (RCAP2H, RCAP2L) = The content of RCAP2H and RCAP2L taken as a 16-bit
unsigned integer.
The Timer 2 as a baud rate generator mode is valid only if RCLK and/or TCLK = 1 in
T2CON register. Note that a rollover in TH2 does not set TF2, and will not generate an
interrupt. Thus, the Timer 2 interrupt does not have to be disabled when Timer 2 is in the
baud rate generator mode. Also if the EXEN2 (T2 external enable flag) is set, a 1-to-0
transition in T2EX (Timer/counter 2 trigger input) will set EXF2 (T2 external flag) but will
not cause a reload from (RCAP2H, RCAP2L) to (TH2, TL2). Therefore when Timer 2 is in
use as a baud rate generator, T2EX can be used as an additional external interrupt, if
needed.
----------------------------------------------------------------------------------------------- -
16
Fig 17. Timer 2 in Baud Rate Generator mode
Modes 1 and 3 Baud Rates = Timer 2 Overflow Rate/16
Modes 1 and 3 Baud Rates =
T2 pin
OSC
65536 RCAP2H RCAP2L
OscillatorFrequency
shows Timer 2 in baud rate generator mode:
T2EX pin
–
2
transition
detector
Rev. 03 — 4 May 2009
C/T2 = 0
C/T2 = 1
EXEN2
control
TR2
80C51 with 256 B RAM, 192 B data EEPROM
control
EXF2
RCAP2L RCAP2H
(8-bits)
timer 2
interrupt
TL2
(8-bits)
TH2
reload
1
6
the oscillator
P89V52X2
© NXP B.V. 2009. All rights reserved.
TX/RX baud rate
002aaa526
24 of 57
(3)