T89C51RD2-SLSIM Atmel, T89C51RD2-SLSIM Datasheet - Page 38
T89C51RD2-SLSIM
Manufacturer Part Number
T89C51RD2-SLSIM
Description
IC MICRO CTRL 64K FLASH 44PLCC
Manufacturer
Atmel
Series
89Cr
Datasheet
1.T89C51RD2-SMSIM.pdf
(104 pages)
Specifications of T89C51RD2-SLSIM
Core Processor
8051
Core Size
8-Bit
Speed
40MHz
Connectivity
SPI, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
1.25K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Data Converters
-
- Current page: 38 of 104
- Download datasheet (2Mb)
Interrupt System
Figure 16. Interrupt Control System
38
EXF2
INT0
INT1
PCA IT
TF0
TF1
TF2
T89C51RD2
RI
TI
Individual Enable
IE0
IE1
The T89C51RD2 has a total of 7 interrupt vectors: two external interrupts (INT0 and
INT1), three timer interrupts (timers 0, 1 and 2), the serial port interrupt and the PCA glo-
bal interrupt. These interrupts are shown in Figure 16.
Each of the interrupt sources can be individually enabled or disabled by setting or clear-
ing a bit in the Interrupt Enable register (See Table 23.). This register also contains a
global disable bit, which must be cleared to disable all interrupts at once.
Each interrupt source can also be individually programmed to one out of four priority lev-
els by setting or clearing a bit in the Interrupt Priority register (See Table 24.) and in the
Interrupt Priority High register (See Table 22). shows the bit values and priority levels
associated with each combination.
Table 22. Priority Level Bit Values
IPH.x
0
0
1
1
IPH, IP
IP.x
0
1
0
1
3
0
3
0
3
0
3
0
3
0
3
0
3
0
Global Disable
Interrupt Level Priority
3 (Highest)
0 (Lowest)
High priority
interrupt
1
2
Interrupt
polling
sequence, decreasing from
high to low priority
Low priority
interrupt
4243G–8051–05/03
Related parts for T89C51RD2-SLSIM
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
0 to 40MHz Flash Programmable 8-bit Microcontroller
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
0 to 40 MHz Flash Programmable 8-bit Microcontroller
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
IC MICRO CTRL 64K FLASH 68PLCC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MICRO CTRL 64K FLASH 64VQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
0 To 40 Mhz Flash Programmable 8-bit Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
0 to 40MHz Flash Programmable 8-bit Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
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: