AT89C51IC2-SLSUM Atmel, AT89C51IC2-SLSUM Datasheet - Page 104
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AT89C51IC2-SLSUM
Manufacturer Part Number
AT89C51IC2-SLSUM
Description
IC 8051 MCU FLASH 32K 44PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C51IC2-SLRIM.pdf
(147 pages)
Specifications of AT89C51IC2-SLSUM
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
32KB (32K 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-PLCC
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
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Minimum Operating Temperature
- 40 C
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Power-off Flag
104
AT89C51IC2
The power-off flag allows the user to distinguish between a “cold start” reset and a
“warm start” reset.
A cold start reset is the one induced by V
V
power-down.
The power-off flag (POF) is located in PCON register (Table 81). POF is set by hard-
ware when V
software allowing the user to determine the type of reset.
Table 81. PCON Register
PCON - Power Control Register (87h)
Reset Value = 00X1 0000b
Not bit addressable
CC
Number
SMOD1
Bit
is still applied to the device and could be generated for example by an exit from
7
7
6
5
4
3
2
1
0
Mnemonic Description
SMOD0
CC
SMOD1
SMOD0
POF
GF1
GF0
Bit
IDL
PD
6
-
rises from 0 to its nominal voltage. The POF can be set or cleared by
Serial port Mode bit 1
Set to select double baud rate in mode 1, 2 or 3.
Serial port Mode bit 0
Cleared to select SM0 bit in SCON register.
Set to select FE bit in SCON register.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Power-Off Flag
Cleared to recognize next reset type.
Set by hardware when V
software.
General purpose Flag
Cleared by user for general purpose usage.
Set by user for general purpose usage.
General purpose Flag
Cleared by user for general purpose usage.
Set by user for general purpose usage.
Power-Down mode bit
Cleared by hardware when reset occurs.
Set to enter power-down mode.
Idle mode bit
Cleared by hardware when interrupt or reset occurs.
Set to enter idle mode.
5
-
POF
4
CC
CC
rises from 0 to its nominal voltage. Can also be set by
switch-on. A warm start reset occurs while
GF1
3
GF0
2
PD
1
4301D–8051–02/08
IDL
0