AN2131QC Cypress Semiconductor Corp, AN2131QC Datasheet - Page 326

• 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

C - 30
EXIF.2-0
EXIF.7
EXIF.6
EXIF.5
EXIF.4
EXIF.3
Bit
Appendix C: 8051 Hardware Description
Table C-14. EXIF Register - SFR 91h
IE4 - External interrupt 4 flag. IE4 indicates a rising edge
Reserved. Read as 1.
IE5 - External interrupt 5 flag. IE 5= 1 indicates a falling
edge was detected at the INT5# pin. IE5 must be cleared by
software. Setting IE5 in software generates an interrupt, if
enabled.
was detected at the INT4 pin. IE4 must be cleared by
software. Setting IE4 in software generates an interrupt, if
enabled.
I2CINT - External interrupt 3 flag. The “INT3” interrupt is
internally connected to the EZ-USB I
renamed “I2CINT”. I2CINT = 1 indicates an I
I2CINT must be cleared by software. Setting I2CINT in
software generates an interrupt, if enabled.
USBINT - External interrupt 2 flag. The “INT2” interrupt is
internally connected to the EZ-USB interrupt and renamed
“USBINT”. USBINT = 1 indicates an USB interrupt.
USBINT must be cleared by software. Setting USBINT in
software generates an interrupt, if enabled.
Reserved. Read as 0.
Function
2
C controller and
2
C interrupt.
EZ-USB TRM v1.9