P89V662FBC,557 NXP Semiconductors, P89V662FBC,557 Datasheet - Page 16

• Manufacturer Part Number: P89V662FBC,557
• Description: IC 80C51 MCU FLASH 32K 44-TQFP
• Manufacturer: NXP Semiconductors
• Series: 89Vr

Specifications of P89V662FBC,557

• Program Memory Type: FLASH
• Program Memory Size: 32KB (32K x 8)
• Package / Case: 44-TQFP
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 36
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: P89V6x
• Core: 80C51
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: I2C/UART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 36
• Number Of Timers: 3
• Operating Supply Voltage: 4.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 622-1001 - USB IN-CIRCUIT PROG 80C51ISP
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-2435; 935280832557; P89V662FBC

NXP Semiconductors
P89V660_662_664_3
Product data sheet
6.2.2 Dual data pointers
The device has two 16-bit data pointers. The DPTR Select (DPS) bit in AUXR1
determines which of the two data pointers is accessed. When DPS = 0, DPTR0 is
selected; when DPS = 1, DPTR1 is selected. Quickly switching between the two data
pointers can be accomplished by a single INC instruction on AUXR1 (see
Fig 4. Internal and external data memory structure
2FFH
000H
2FFH
000H
EXPANDED RAM
ADDRESSING)
EXPANDED
(INDIRECT
768 B
Rev. 03 — 10 November 2008
RAM
FFFFH
0300H
80C51 with 512 B/1 kB/2 kB RAM, dual I
FFH
7FH
80H
00H
INTERNAL RAM
INTERNAL RAM
(INDIRECT AND
ADDRESSING)
ADDRESSING)
ADDRESSING)
LOWER 128 B
UPPER 128 B
EXTRAM = 0
EXTERNAL
(INDIRECT
(INDIRECT
MEMORY
DIRECT
DATA
P89V660/662/664
FFFFH
0000H
FFH
80H
REGISTERS (SFRs)
ADDRESSING)
ADDRESSING)
EXTERNAL
FUNCTION
(INDIRECT
EXTRAM = 1
MEMORY
SPECIAL
(DIRECT
DATA
© NXP B.V. 2008. All rights reserved.
Figure
002aaa517
2
C-bus, SPI
5).
16 of 89