AT89C5130A-RDRUM Atmel, AT89C5130A-RDRUM Datasheet - Page 79

• Manufacturer Part Number: AT89C5130A-RDRUM
• Description: MCU 8051 16K FLASH USB 64-VQFP
• Manufacturer: Atmel
• Series: AT89C513xr

Specifications of AT89C5130A-RDRUM

• Core Processor: C52X2
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: LED, POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89STK-05
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -

16. Interrupt System
16.1
Figure 16-1. Interrupt Control System
4337K–USB–04/08
Overview
USBINT
UEPINT
EXF2
KBD IT
TWI IT
SPI IT
INT0
INT1
TF0
PCA IT
TF1
TF2
RI
TI
TCON.0
TCON.2
IT0
IT1
Individual Enable
The AT89C5130A/31A-M has a total of 11 interrupt vectors: two external interrupts (INT0 and
INT1), three timer interrupts (timers 0, 1 and 2), the serial port interrupt, SPI interrupt, Keyboard
interrupt, USB interrupt and the PCA global interrupt. These interrupts are shown in Figure 16-1.
Each of the interrupt sources can be individually enabled or disabled by setting or clearing a bit
in the Interrupt Enable register
which must be cleared to disable all interrupts at once.
IE0
IE1
IPH, IPL
(Table
Global Disable
3
0
3
0
3
0
3
0
3
0
3
0
3
0
3
0
3
0
3
0
3
0
16-2). This register also contains a global disable bit,
AT89C5130A/31A-M
High priority
interrupt
Interrupt
Polling
Sequence, Decreasing From
High-to-Low Priority
Low Priority
Interrupt
79