AN2131QC Cypress Semiconductor Corp, AN2131QC Datasheet - Page 212

• Manufacturer Part Number: AN2131QC
• Description: IC MCU 8051 8K RAM 24MHZ 80BQFP
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-USB®r

Specifications of AN2131QC

• Applications: USB Microcontroller
• Core Processor: 8051
• Program Memory Type: ROMless
• Controller Series: AN213x
• Ram Size: 8K x 8
• Interface: I²C, USB
• Number Of I /o: 24
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1307

IVEC indicates the source of an interrupt from the USB Core. When the USB core gener-
ates an INT2 (USB) interrupt request, it updates IVEC to indicate the source of the inter-
rupt. The interrupt sources are encoded on IV[4..0] as shown in Figure 9-2.
EZ-USB TRM v1.9
IVEC
12.11 Interrupts
b7
R
0
0
IV4
b6
R
0
IV3
b5
R
0
Figure 12-16. Interrupt Vector Register
Chapter 12. EZ-USB Registers
Interrupt Vector
IV2
b4
R
0
IV1
b3
R
0
IV0
b2
R
0
b1
R
0
0
Page 12-19
b0
R
0
0
7FA8