AN2131QC Cypress Semiconductor Corp, AN2131QC Datasheet - Page 66

• 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

Figure 4-4 shows the registers associated with the EZ-USB IO ports. The power-on
default for the PORTCFG bits is 0, selecting the IO port function. The power-on default
for the OE bits is 0, selecting the input direction.
EZ-USB TRM v1.9
4.3
PORTCCFG
PORTACFG
PORTBCFG
IO Port Registers
PINSC
PINSA
PINSB
OUTC
OUTA
OUTB
OEC
OEA
OEB
RxD1out
T2OUT
RD
D7
D7
D7
D7
D7
D7
D7
D7
D7
Figure 4-4. Registers Associated with PORTS A, B, and C
RxD0out
INT6
WR
D6
D6
D6
D6
D6
D6
D6
D6
D6
Chapter 4. EZ-USB CPU
INT5
FRD
D5
D5
D5
D5
D5
D5
T1
D5
D5
D5
FWR
INT4
D4
D4
D4
D4
D4
D4
D4
D4
D4
T0
TxD1
INT1
CS
D3
D3
D3
D3
D3
D3
D3
D3
D3
RxD1
INT0
OE
D2
D2
D2
D2
D2
D2
D2
D2
D2
T1out
T2EX
TxD0
D1
D1
D1
D1
D1
D1
D1
D1
D1
T0out
RxD0
Page 4-5
D0
D0
D0
D0
D0
D0
D0
D0
D0
T2