AT89C51IC2-RLRUL Atmel, AT89C51IC2-RLRUL Datasheet - Page 14

IC 8051 MCU 32K FLASH 44-VQFP

AT89C51IC2-RLRUL

Manufacturer Part Number
AT89C51IC2-RLRUL
Description
IC 8051 MCU 32K FLASH 44-VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet

Specifications of AT89C51IC2-RLRUL

Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
34
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Processor Series
AT89x
Core
8051
Data Bus Width
8 bit
Data Ram Size
1280 B
Interface Type
UART, SPI, TWI
Maximum Clock Frequency
60 MHz
Number Of Programmable I/os
34
Number Of Timers
3
Operating Supply Voltage
2.7 V to 5.5 V
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
For Use With
AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCU
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
 Details
Other names
AT89C51IC2-RLRULTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT89C51IC2-RLRUL
Manufacturer:
Atmel
Quantity:
10 000
Oscillators
Overview
Registers
14
AT89C51IC2
Two oscillators are available for CPU:
Several operating modes are available and programmable by software:
In order to optimize the power consumption and the execution time needed for a specific
task, an internal prescaler feature has been implemented between the selected oscilla-
tor and the CPU.
Table 14. CKSEL Register
CKSEL - Clock Selection Register (85h)
Reset Value = 0000 000’HSB.OSC’b (see Hardware Security Byte (HSB) Table 84)
Not bit addressable
Number
OSCA used for high frequency: Up to 48 MHz @5V +/- 10%
OSCB used for low frequency: 32.768 kHz
to switch OSCA to OSCB and vice-versa
to stop OSCA or OSCB to reduce consumption
Bit
7
-
7
6
5
4
3
2
1
0
Mnemonic Description
CKS
Bit
6
-
-
-
-
-
-
-
-
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
CPU Oscillator Select Bit: (CKS)
Cleared, CPU and peripherals connected to OSCB
Set, CPU and peripherals connected to OSCA
Programmed by hardware after a Power-up regarding Hardware Security Byte
(HSB).HSB.OSC (Default setting, OSCA selected)
5
-
4
-
3
-
2
-
1
-
4301D–8051–02/08
CKS
0

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