AN2131QC Cypress Semiconductor Corp, AN2131QC Datasheet - Page 301

• 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

EZ-USB TRM v1.9
TCON.7
TCON.6
TCON.5
TCON.4
TCON.3
TCON.2
TCON.1
TCON.0
Bit
Appendix C: 8051 Hardware Description
Table C-3. TCON Register - SRF 88h
overflows and cleared when the processor vectors to the
interrupt service routine.
Timer 1.
overflows and cleared when the processor vectors to the
interrupt service routine.
Timer 0.
configured to be edge-sensitive (IT1 = 1), IE1 is set by
hardware when a negative edge is detected on the INT1 pin
and is automatically cleared when the CPU vectors to the
corresponding interrupt service routine. In this case, IE1 can
also be cleared by software. If external interrupt 1 is
configured to be level-sensitive (IT1 = 0), IE1 is set when the
INT1# pin is 0 and cleared when the INT1# pin is 1. In level-
sensitive mode, software cannot write to IE1.
when IT1 = 1; INT1 is detected as a low level when IT1 = 0.
configured to be edge-sensitive (IT0 = 1), IE0 is set by
hardware when a negative edge is detected on the INT0 pin
and is automatically cleared when the CPU vectors to the
corresponding interrupt service routine. In this case, IE0 can
also be cleared by software. If external interrupt 0 is
configured to be level-sensitive (IT0 = 0), IE0 is set when the
INT0# pin is 0 and cleared when the INT0# pin is 1. In level-
sensitive mode, software cannot write to IE0.
when IT0 = 1; INT0 is detected as a low level when IT0 = 0.
TF1 - Timer 1 overflow flag. Set to 1 when the Timer 1 count
TR1 - Timer 1 run control. Set to 1 to enable counting on
TF0 - Timer 0 overflow flag. Set to 1 when the Timer 0 count
TR0 - Timer 0 run control. Set to 1 to enable counting on
IE1 - Interrupt 1 edge detect. If external interrupt 1 is
IT1 - Interrupt 1 type select. INT1 is detected on falling edge
IE0 - Interrupt 0 edge detect. If external interrupt 0 is
IT0 - Interrupt 0 type select. INT0 is detected on falling edge
Function
C - 5