AN2131SC Cypress Semiconductor Corp, AN2131SC Datasheet - Page 33

• Manufacturer Part Number: AN2131SC
• Description: IC MCU 8051 8K RAM 24MHZ 44QFP
• Manufacturer: Cypress Semiconductor Corp
• Series: EZ-USB®r

Specifications of AN2131SC

• 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: 16
• 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: 428-1306; AN2131SC

The EZ-USB family is available in various pinouts to serve different system requirements
and costs. Table 1-2 shows the feature set for each member of the EZ-USB Series 2100
Family.
This section summarizes the features of the AN2122 and AN2126 packages. These fea-
tures are not available in the other packages of the EZ-USB family.
Power Saving Option
To reduce power, the 8051 processor can be run at half speed. When the CPU12MHZ pin
is tied high, the 8051 processor core runs at 12 MHz. When tied low, the 8051 runs at the
normal 24 MHz. The logic state of this pin should never be changed while the 8051 is
running.
230 Kbaud UART Operation
Two control bits in a register, UART230, allow 230-Kbaud operation by UART0 and
UART1 (see Section 12.8, "230-Kbaud UART Operation - AN2122, AN2126").
Page 1-16
1.17
1.18
AN2131Q
AN2121S
AN2122S
AN2122T
AN2125S
AN2126S
AN2126T
AN2131S
AN2135S
AN2136S
Number
Part
EZ-USB Product Family
Summary of AN2122, AN2126 Features
RAM
Size
4KB
4KB
4KB
4KB
4KB
4KB
8KB
8KB
8KB
8KB
Support
ISO
Y
N
N
Y
N
N
Y
Y
Y
N
Endpoints
32
13
13
32
13
13
32
32
32
16
Table 1-2. EZ-USB Series 2100 Family
Key Features
Data Bus
Data Bus
Data Bus
Data Bus
Data Bus
Data Bus
or Port B
Port B
Port B
Port B
Port B
Both
Chapter 1. Introducing EZ-USB
Bytes/s Max
I/O Rate
600K
600K
600K
600K
2M
2M
2M
2M
2M
2M
Prog
I/Os
16
16
19
24
16
11
8
8
8
8
Q = 80 PQFP
S = 44 PQFP
S = 44 PQFP
S = 44 PQFP
S = 44 PQFP
S = 44 PQFP
S = 44 PQFP
S = 44 PQFP
T = 48 TQFP
T = 48 TQFP
Package
(Async) Speed
Max UART
(Kbaud)
115.2
230.4
230.4
115.2
230.4
230.4
115.2
115.2
115.2
115.2
EZ-USB TRM v1.9
Saving
Option
Power
N
N
N
N
N
N
N
N
Y
Y
STOP
IBN/
N
Y
Y
N
Y
Y
N
N
N
N