AT89LP6440-20PU Atmel, AT89LP6440-20PU Datasheet - Page 101
AT89LP6440-20PU
Manufacturer Part Number
AT89LP6440-20PU
Description
MCU 8051 64K FLASH ISP 40PDIP
Manufacturer
Atmel
Series
89LPr
Datasheet
1.AT89LP6440-20MU.pdf
(194 pages)
Specifications of AT89LP6440-20PU
Core Processor
8051
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
38
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
8K x 8
Ram Size
4.25K x 8
Voltage - Supply (vcc/vdd)
2.4 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 101 of 194
- Download datasheet (6Mb)
Table 17-2.
3706A–MICRO–9/09
SPCR Address = E9H
Not Bit Addressable
Symbol
TSCK
SPE
DORD
MSTR
CPOL
CPHA
Bit
TSCK
SCK Clock Mode. When TSCK = 0, the SCK baud rate is based on the system clock, divided by the SPR
TSCK = 1, the SCK baud rate is based on the Timer 1 overflow rate, divided by the SPR
SPI enable. SPI = 1 enables the SPI channel and connects SS, MOSI, MISO and SCK to pins P1.4, P1.5, P1.6, and P1.7.
SPI = 0 disables the SPI channel.
Data order. DORD = 1 selects LSB first data transmission. DORD = 0 selects MSB first data transmission.
Master/slave select. MSTR = 1 selects Master SPI mode. MSTR = 0 selects slave SPI mode.
Clock polarity. When CPOL = 1, SCK is high when idle. When CPOL = 0, SCK of the master device is low when not
transmitting. Please refer to figure on SPI clock phase and polarity control.
Clock phase. The CPHA bit together with the CPOL bit controls the clock and data relationship between master and
slave. Please refer to figure on SPI clock phase and polarity control.
Function
7
SPCR – SPI Control Register
SPE
.
Table 17-1.
Notes:
6
MOSI
MISO
SCK
Pin
1. In these modes MOSI is active only during transfers. MOSI will be pulled high between trans-
2. In Push-Pull mode MOSI is active only during transfers, otherwise it is tristated to prevent line
fers to allow other masters to control the line.
contention. A weak external pull-up may be required to prevent MOSI from floating.
Mode
Quasi-bidirectional
Push-Pull Output
Input-Only
Open-Drain Output
Quasi-bidirectional
Push-Pull Output
Input-Only
Open-Drain Output
Quasi-bidirectional
Push-Pull Output
Input-Only
Open-Drain Output
DORD
5
SPI Pin Configuration and Behavior when SPE = 1
MSTR
4
Master (MSTR = 1)
No output (Tristated)
No output (Tristated)
Output
Output
Output
Output
Output
Output
Input (Internal Pull-up)
Input (Tristate)
Input (Tristate)
Input (External Pull-up)
(1)
(2)
(1)
CPOL
3
AT89LP6440 - Preliminary
CPHA
2
Slave (MSTR = 0)
Input (Internal Pull-up)
Input (Tristate)
Input (Tristate)
Input (External Pull-up)
Input (Internal Pull-up)
Input (Tristate)
Input (Tristate)
Input (External Pull-up)
Output (SS = 0)
Internal Pull-up (SS = 1 or DISSO = 1)
Output (SS = 0)
Tristated (SS = 1 or DISSO = 1)
No output (Tristated)
Output (SS = 0)
External Pull-up (SS = 1 or DISSO = 1)
Reset Value = 0000 0000B
1-0
SPR1
1
ratio.
SPR0
1-0
0
ratio.When
101
Related parts for AT89LP6440-20PU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
DEV KIT FOR AVR/AVR32
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet: