AT89C51RB2-RLTIM Atmel, AT89C51RB2-RLTIM Datasheet - Page 17
AT89C51RB2-RLTIM
Manufacturer Part Number
AT89C51RB2-RLTIM
Description
IC 8051 MCU FLASH 16K 44VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51RB2-RLTIL.pdf
(127 pages)
Specifications of AT89C51RB2-RLTIM
Core Processor
8051
Core Size
8-Bit
Speed
60MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
For Use With
AT89STK-11 - KIT STARTER FOR AT89C51RX2
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 17 of 127
- Download datasheet (2Mb)
Figure 6. Mode Switching Waveforms
4180E–8051–10/06
XTAL1
XTAL1:2
X2 Bit
CPU Clock
x1 Mode
The X2 bit in the CKCON0 register (see Table 15) allows a switch from 12 clock periods
per instruction to 6 clock periods and vice versa. At reset, the speed is set according to
X2 bit of Hardware Security Byte (HSB). By default, Standard mode is active. Setting the
X2 bit activates the X2 feature (X2 mode).
The T0X2, T1X2, T2X2, UARTX2, PCAX2, and WDX2 bits in the CKCON0 register
(Table 15) and SPIX2 bit in the CKCON1 register (see Table 16) allow a switch from
standard peripheral speed (12 clock periods per peripheral clock cycle) to fast periph-
eral speed (6 clock periods per peripheral clock cycle). These bits are active only in X2
mode.
F
OSC
X2 Mode
AT89C51RB2/RC2
X1 Mode
17
Related parts for AT89C51RB2-RLTIM
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
Part Number:
Description:
IC 8051 MCU 16K FLASH 44-VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 16K 44VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU FLASH 8051 16K 3V 44-VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 16K 44VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU FLASH 8051 16K 5V 44-VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU 8051 16K FLASH 5V 44-VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 16K 44PLCC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU 8051 16K FLASH 3V 44-PLCC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU 8051 16K FLASH 5V 44-PLCC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU 8051 16K FLASH 3V 44-PLCC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 16K 44VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC 8051 MCU FLASH 16K 44PLCC
Manufacturer:
Atmel
Datasheet: