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PDF MCP2210 Data sheet ( Hoja de datos )
| Número de pieza | MCP2210 | |
| Descripción | USB-to-SPI Protocol Converter | |
| Fabricantes | Microchip | |
| Logotipo |  |
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MCP2210
USB-to-SPI Protocol Converter with GPIO (Master Mode)
Features:
Universal Serial Bus (USB)
• Supports Full-Speed USB (12 Mb/s)
• Human Interface Device (HID) device
• 128-Byte Buffer to Handle Data Throughput:
- 64-byte transmit
- 64-byte receive
• Fully Configurable VID, PID Assignments and
String Descriptor (factory programming also avail-
able)
• Bus Powered (factory default) or Self-Powered
(can be selected through special USB
commands)
• USB 2.0 Compliant
USB Driver and Software Support
• Uses Standard HID Drivers (built-in support on
Windows® XP, Vista, 7, Linux and Mac OS®)
• Configuration Utility for Device’s Power-up
Configuration
• Utility for USB-SPI Communication, GPIO
Manipulation and Miscellaneous Features Usage
SPI Master Peripheral
• Supports all Four SPI modes (Mode 0, 1, 2, 3)
• Bit Rates from 1500 bps up to 12 Mbps
• Configurable Delays for SPI Transactions:
- Chip Select (assert) to 1st byte of data delay
- Data to data delay
- Data to Chip Select (de-assert) delay
• SPI Transactions Lengths of up to 65535 Bytes
Long
• Up to 9 Chip Select lines – to be used in any
combination for a given SPI transaction (the Chip
Select lines are shared between GPIOs and
alternate function pins; certain GPs – up to 9 of
them – can be assigned with the Chip Select
functionality)
General Purpose Input/Output (GPIO) Pins
• Nine General Purpose I/O Pins
EEPROM
• 256 Bytes of User EEPROM (accessible through
certain USB commands)
Package Types:
The device will be offered in the following packages:
• 20-lead QFN (5 x 5 mm)
• 20-lead SOIC
• 20-lead SSOP
MCP2210
SOIC, SSOP
VDD 1
OSC1 2
OSC2 3
RST 4
GP0 5
GP1 6
GP2 7
GP3 8
MOSI 9
GP4 10
20 VSS
19 D+
18 D-
17 VUSB
16 GP8
15 GP7
14 GP6
13 MISO
12 GP5
11 SCK
MCP2210
5x5 QFN*
20 19 18 17 16
RST 1
15 D-
GP0 2
GP1 3
GP2 4
EP
21
14 VUSB
13 GP8
12 GP7
GP3 5
11 GP6
6 7 8 9 10
* Includes Exposed Thermal Pad (EP); see Table 1-1.
Other
• USB Activity LED Output
• SSPND Output Pin (to signal USB Suspend state)
• USBCFG Output Pin (indicates when the
enumeration is completed)
• Operating Voltage: 3.3-5.5V
• Oscillator Input: 12 MHz
• Industrial Operating Temperature: -40°C to +85°C
2011 Microchip Technology Inc.
DS22288A-page 1
1 page  
1.5 USB Transceiver
The MCP2210 has a built-in, USB 2.0, full-speed
transceiver internally connected to the USB module.
The USB transceiver obtains power from the VUSB pin,
which is internally connected to a 3.3V internal
regulator. The best electrical signal quality is obtained
when VUSB is locally bypassed with a high-quality
ceramic capacitor.
The internal 3.3V regulator draws power from the VDD
pin. In certain scenarios, where VDD is lower than
3.3V+ internal LDO dropout, the VUSB pin must be tied
to an external regulated 3.3V. This will allow the USB
transceiver to work correctly, while the I/O voltage in
the rest of the system can be lower than 3.3V. As an
example, in a system where the MCP2210 is used and
the I/O required is of 2.2V, the VDD of the chip will be
tied to the 2.2V digital power rail, while the VUSB pin
must be connected to a regulated 3.3V power supply.
1.5.1 INTERNAL PULL-UP RESISTORS
The MCP2210 device has built-in pull-up resistors
designed to meet the requirements for full-speed USB.
1.5.2 MCP2210 POWER OPTIONS
The following are the main power options for the
MCP2210:
• USB Bus Powered (5V)
• Self Powered (from 3.3V to 5V), while the VUSB
pin is supplied with 3.3V (regulated). If the VDD is
powered with 5V, then the VUSB will be powered
by the internal regulator and the VUSB pin will
need only a decoupling capacitor
1.5.2.1 Internal Power Supply Details
MCP2210 offers various options for power supply. To
meet the required USB signaling levels, MCP2210
device incorporates an internal LDO used solely by the
USB transceiver, in order to present the correct D+/D
voltage levels.
Figure 1-1 shows the internal connections of the USB
transceiver LDO in relation with the VDD power supply
rail. The output of the USB transceiver LDO is tied to
the VUSB line.
A capacitor connected to the VUSB pin is required if the
USB transceiver LDO provides the 3.3V supply to the
transceiver.
MCP2210
FIGURE 1-1:
VDD
VUSB
MCP2210 INTERNAL
POWER SUPPLY DETAILS
IN
LDO
3.3V
OUT
D+ USB
Transceiver
D-
The provided VDD voltage has a direct influence on the
voltage levels present on the GPIO and SPI module
pins (GP8-GP0, MOSI, MISO and SCK). When VDD is
5V, all of these pins will have a logical ‘1’ around 5V
with the variations specified in Section 4.1 “DC Char-
acteristics”.
For applications that require a 3.3V logical ‘1’ level,
VDD must be connected to a power supply providing
the 3.3V voltage. In this case, the internal USB
transceiver LDO cannot provide the required 3.3V
power. It is necessary to also connect the VUSB pin of
the MCP2210 to the 3.3V power supply rail. This way,
the USB transceiver is powered up directly from the
3.3V power supply.
1.5.2.2 USB Bus Powered (5V)
In Bus Power Only mode, the entire power for the
application is drawn from the USB (see Figure 1-2).
This is effectively the simplest power method for the
device.
FIGURE 1-2:
BUS POWER ONLY
VBUS
VDD
VUSB
VSS
2011 Microchip Technology Inc.
DS22288A-page 5
5 Page 
MCP2210
3.0 USB COMMANDS/RESPONSES
DESCRIPTION
MCP2210 implements the HID interface for all the
device-provided functionalities. The chip uses a
command/response mechanism for the USB engine.
This means that for every USB command sent (by the
USB host) to the MCP2210, it will always reply with a
response packet.
The MCP2210 USB commands can be grouped by
their provided features as follows:
• NVRAM Settings
- Read/Write NVRAM related parameters
- Send access password
• Read/Write RAM Settings (copied from NVRAM
at power-up or Reset):
- Read/Write (volatile – RAM stored settings)
SPI transfer settings
- Read/Write (volatile – RAM stored settings)
chip settings
- Read/Write (volatile – RAM stored settings)
GPIO direction
- Read/Write (volatile – RAM stored settings)
GPIO output values
• Read/Write EEPROM Memory
• External Interrupt Pin (GP6) Event Status
• SPI Data Transfer:
- Read/Write SPI transfer data
- Cancels the ongoing SPI transfer
- SPI bus release manipulation
• Chip Status and Unsupported commands
3.1 NVRAM Settings
The commands in this category are related to the NVRAM settings manipulation.
3.1.1 SET CHIP SETTINGS POWER-UP DEFAULT
TABLE 3-1: COMMAND STRUCTURE
Byte Index
Meaning
0 0x60 – Set Chip NVRAM Parameters – command code
1 0x20 – Set Chip Settings Power-up Default – sub-command code
2 0x00 – Reserved
3 0x00 – Reserved
4 GP0 Pin Designation
• GPIO = 0x00
• Chip Selects = 0x01
• Dedicated Function pin = 0x02
5 GP1 Pin Designation
• GPIO = 0x00
• Chip Selects = 0x01
• Dedicated Function pin = 0x02
6 GP2 Pin Designation
• GPIO = 0x00
• Chip Selects = 0x01
• Dedicated Function pin = 0x02
7 GP3 Pin Designation
• GPIO = 0x00
• Chip Selects = 0x01
• Dedicated Function pin = 0x02
8 GP4 Pin Designation
• GPIO = 0x00
• Chip Selects = 0x01
• Dedicated Function pin = 0x02
2011 Microchip Technology Inc.
DS22288A-page 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MCP2210.PDF ] | |
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