P89V52X2FA,512 NXP Semiconductors, P89V52X2FA,512 Datasheet - Page 41

• Manufacturer Part Number: P89V52X2FA,512
• Description: IC 80C51 MCU FLASH 8K 44-PLCC
• Manufacturer: NXP Semiconductors
• Series: 89Vr

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

NXP Semiconductors
P89V52X2_3
Product data sheet
6.16 Code security (CSEC) bits
Table 40.
The code security bits protect against software piracy and prevent the contents of the
flash from being read by unauthorized parties. The code security bits and their effects are
shown in
Table 41.
Table 42.
Bit
7 to 3
2
1
0
Bit
7 to 2
1
0
Bit
Symbol
Table
UCFG - User configuration register bit description
CSEC - Code security register bit allocation
CSEC - Code security register bit description
Symbol
-
ENW
FX2
EXTCLK
Symbol
-
INTEXEC
PROT
7
-
41.
6
-
Rev. 03 — 4 May 2009
Description
Reserved
Enable Write. When programmed = 1, forces the WE bit to be set.
Force X2. When programmed = 1, the device is in 6-clock mode.
When erased = 0, the mode depends on the state of the X2 bit in
CKCON.
External Clock. When programmed = 1, disables the XTAL block when
using an external digital clock source.
Description
Reserved
Internal execution only. When programmed, if the internal address
space is exceeded, the address will rollover into internal space (upper
address bits are ignored) for MOVC and instruction fetches. MOVC will
access the data EEPROM when the address >= FF00H.
Protect. When programmed, prohibits further erasing or programming
of code memory.
memory are disabled from fetching code bytes from internal
code memory.
5
-
MOVC instructions executed from external code
80C51 with 256 B RAM, 192 B data EEPROM
4
-
3
-
2
-
P89V52X2
INTEXEC
© NXP B.V. 2009. All rights reserved.
1
PROT
41 of 57
0