AN2131QC Cypress Semiconductor Corp, AN2131QC Datasheet - Page 45

• 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

Page 1-28
3, 5, 6,
13, 14,
17, 23,
43, 56,
63, 72,
2131Q
42, 62
2, 22,
N/A
40
41
66
65
64
78
67
4
11, 22,
1, 3, 4,
12,23,
2121S
2122S
2131S
33, 44
34, 38
5, 6,
N/A
N/A
20
21
37
36
35
2
11, 22,
1, 3, 4,
12, 23,
2125S
2126S
2135S
2136S
33, 44
34, 38
5, 6,
N/A
N/A
20
21
37
36
35
2
12,24,
1, 3, 4,
13,25,
2122T 2126T
36, 48
37, 41
5, 6,
N/A
22
23
40
39
38
15
2
Table 1-3. EZ-USB Series 2100 Pinouts by Pin Function
12, 24,
1, 3, 4,
13, 25,
36, 48
37, 41
5, 6,
N/A
22
23
40
39
38
15
2
PC6 or WR#
PC7 or RD#
CPU12MHZ
WAKEUP#
CLK24
Name
GND
Chapter 1. Introducing EZ-USB
SCL
SDA
Vcc
NC
Output
Type
Input
OD
OD
I/O
I/O
Default
(PC6)
(PC7)
N/A
N/A
N/A
N/A
N/A
Z
Z
I
I
Multiplexed pin whose function is selected by the
WR bit of the PORTCCFG register. If WR=0, the pin
is the bi-directional I/O port bit PC6. If WR=1, the
pin is the active-low write signal for external mem-
ory. If the WR# signal is used, it should be externally
pulled up to Vcc to ensure that the write strobe is
inactive at power-on.
Multiplexed pin whose function is selected by the RD
bit of the PORTCCFG register. If RD#=0, the pin is
the bi-directional I/O port bit PC7. If RD#=1, the pin
is the active-low read signal for external memory. If
the RD# signal is used, it should be externally pulled
up to Vcc to ensure that the read strobe is inactive at
power-on.
24-MHz clock, phase locked to the 12-MHz input
clock. It operates at 12 MHz in 12-MHz mode (48-pin
package). Output is disabled by setting the
OUTCLKEN bit = 0 in the CPUCS register.
USB Wakeup. If the 8051 is in suspend, a high to
low edge on this pin starts up the oscillator and inter-
rupts the 8051 to allow it to exit the suspend mode.
Holding WAKEUP# LOW inhibits the EZ-USB chip
from entering the suspend state.
I
even if no I
I
even if no I
Vcc. 3.3V power source.
Ground. Note: On the 80-pin package, pins 5, 6, 13,
14, and 72 are test pins that must be grounded for
normal operation. Driving pin 72 high floats all func-
tional pins for automated board test.
The corresponding pins on the 44-pin package are
pins 3, 4, 5, 6, and 38. Driving pin 38 high floats all
functional pins for automated board test.
The corresponding pins on the 48-pin package are
pins 3, 4, 5, 6, and 41. Driving pin 41 high floats all
functional pins for automated board testing.
This input controls the speed of the 8051:
This pin must be left unconnected.
2
2
C Clock. Pull up to Vcc with a 2.2K-ohm resistor,
C Data. Connect to Vcc with a 2.2K-ohm resistor
- Tied High - 12 MHz
- Tied Low - 24 MHz
2
2
C device is connected.
C device is connected.
Description
EZ-USB TRM v1.9