AT89C51ID2-SLRUM Atmel, AT89C51ID2-SLRUM Datasheet - Page 15

• Manufacturer Part Number: AT89C51ID2-SLRUM
• Description: IC 8051 MCU 64K FLASH 44-PLCC
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51ID2-SLRUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 60MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: UART, SPI, TWI
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 32
• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: AT89C51ID2-SLRUMTR

15
AT89C51ID2
Table 17. OSCCON Register (for AT8xC51Ix2 only)
OSCCON- Oscillator Control Register (86h)
Reset Value = XXXX X0’HSB.OSC’’HSB.OSC’b (see Hardware Security Byte (HSB))
Not bit addressable
Table 18. CKRL Register
CKRL - Clock Reload Register
Reset Value = 1111 1111b
Not bit addressable
Number
Number
Bit
Bit
7:0
7
7
-
-
7
6
5
4
3
2
1
0
Mnemonic Description
Mnemonic Description
SCLKT0
OscBEn
OscAEn
CKRL
Bit
6
6
-
-
-
-
-
-
-
Reserved
Reserved
Reserved
Reserved
Reserved
Sub Clock Timer0
Cleared by software to select T0 pin
Set by software to select T0 Sub Clock
Cleared by hardware after a Power Up
OscB enable bit
Set by software to run OscB
Cleared by software to stop OscB
Programmed by hardware after a Power-up regarding HSB.OSC (Default
cleared, OSCB stopped)
OscA enable bit
Set by software to run OscA
Cleared by software to stop OscA
Programmed by hardware after a Power-up regarding HSB.OSC(Default Set,
OSCA runs)
Clock Reload Register:
Prescaler value
5
5
-
-
4
4
-
-
3
3
-
-
SCLKT0
2
2
-
OscBEn
1
1
-
4289C–8051–11/05
OscAEn
0
0
-