AN2136SC Cypress Semiconductor Corp, AN2136SC Datasheet - Page 169
AN2136SC
Manufacturer Part Number
AN2136SC
Description
IC MCU 8051 8K RAM 24MHZ 44QFP
Manufacturer
Cypress Semiconductor Corp
Series
EZ-USB®r
Datasheet
1.AN2131SC.pdf
(334 pages)
Specifications of AN2136SC
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
8
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
44-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
428-1309
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Figure 9-3 illustrates a typical USB ISR for endpoint 2-IN.
Page 9-6
USB_ISR:
;
;
;
; (perform interrupt routine stuff)
;
;
push
push
push
push
push
push
mov
clr
mov
mov
mov
movx
pop
pop
pop
pop
pop
pop
reti
Figure 9-3. The Order of Clearing Interrupt Requests is Important
dps
dpl
dph
dpl1
dph1
acc
a,EXIF
acc.4
EXIF,a
dptr,#IN07IRQ
a,#00000100b
@dptr,a
acc
dph1
dpl1
dph
dpl
dps
Chapter 9. EZ-USB Interrupts
; FIRST clear the USB (INT2) interrupt request
; Note:
; now clear the USB interrupt request
; use IN2 as example
EXIF reg is not 8051 bit-addressable
EZ-USB TRM v1.9
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