AN2136SC Cypress Semiconductor Corp, AN2136SC Datasheet - Page 190
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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
Available stocks
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The 8051 code responds to the SUSPEND interrupt by taking the following steps:
These actions put the EZ-USB chip into a low-power mode, as required by the USB Spec-
ification.
EZ-USB TRM v1.9
11.3
1. Performs any necessary housekeeping such as shutting off external power-con-
2. Sets bit 0 of the PCON SFR (Special Function Register). This has two effects:
suming devices.
•
•
Resume
The 8051 enters its idle mode, which is exited by any interrupt.
The 8051 sends an internal signal to the EZ-USB core which causes it to turn
off the oscillator and PLL.
WAKEUP# pin
USB Resume
Figure 11-3. EZ-USB Resume Sequence
Chapter 11. EZ-USB Power Management
Restart
Delay
Resume INT
START
Oscillator
12 MHz
48 MHz
div by
8051
PLL
2
CLK24
(USBCS.0)
Resume
Signal
Page 11-3
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