AN2131QC Cypress Semiconductor Corp, AN2131QC Datasheet - Page 281

• 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

B.1
This appendix provides a technical overview and description of the 8051 core architecture.
EZ-USB TRM v1.9
Appendix B: 8051 Architectural Overview
Introduction
8051_control
8051_op_decoder
8051_ram_128
(80..FFh indirect)
(0..7Fh direct/indirect)
(lower 128 Byte RAM)
8051_ram_128
Appendix B: 8051 Architectural Overview
8051_cpu
8051_alu
8051_biu
main_regs
8051_
Figure B-1. 8051 Block Diagram
8051_intr_0
8051_intr_1
Interrupt Unit
8051
8051_timer
Timers 0 and 1
or
8051_serial
Serial Port 1
8051_timer2
8051_serial
Timer 2
Serial Port 0
PC4/TO, PC5/T1
PA0/t0_out,
PA1/t0_out
port_control
A15-A0
D7 - D0
CLK24
interrupts
RESET#
PB0/T2
PB1/t2ex
PB7/t2out
PB2/rxd1in
PA7/rxd1out
PB3/txd1
PC1/TxD0
PC0/rxd0in
PA6/rxd0out
B - 1