MCP2210 MICROCHIP [Microchip Technology], MCP2210 Datasheet - Page 8

• Manufacturer Part Number: MCP2210
• Description: USB-to-SPI Protocol Converter with GPIO (Master Mode)
• Manufacturer: MICROCHIP [Microchip Technology]

MCP2210
1.7
The EEPROM module is a 256-byte array of nonvola-
tile memory. The memory locations are accessed for
read/write operations solely via USB host commands.
The memory cells for data EEPROM are rated to
endure thousands of erase/write cycles, up to 100K for
EEPROM.
Data retention without refresh is conservatively
estimated to be greater than 40 years.
1.8
1.8.1
The RST pin provides a method for triggering an
external Reset of the device. A Reset is generated by
holding the pin low. MCP2210 has a noise filter in the
Reset path which detects and ignores small pulses.
1.8.2
A POR pulse is generated on-chip whenever V
above a certain threshold. This allows the device to
start in the initialized state when V
operation.
To take advantage of the POR circuitry, tie the RST pin
through a resistor (1 k to 10 k) to V
eliminate external RC components usually needed to
create a POR delay.
When the device starts normal operation (i.e., exits the
Reset condition), the device operating parameters
(voltage, frequency, temperature, etc.) must be met to
ensure operation. If these conditions are not achieved,
the device must be held in Reset until the operating
conditions are met.
DS22288A-page 8
EEPROM Module
Reset/POR
RESET PIN
POR
DD
is adequate for
DD
. This will
DD
rises
1.9
The input clock must be 12 MHz to provide the proper
frequency for the USB module. USB full-speed is
nominally 12 Mb/s. The clock input accuracy is ±0.25%
(2,500 ppm maximum).
FIGURE 1-5:
FIGURE 1-6:
Note 1: A series resistor (R
Oscillator
Quartz Crystal
2: The value of R
CSTCE12M0G15L
Example: muRata
12 MHz
quartz crystals with high drive level.
10 M..
Resonator
12 MHz
QUARTZ CRYSTAL
OPERATION
CERAMIC RESONATOR
OPERATION
R
 2011 Microchip Technology Inc.
S
F
(1)
is typically between 2 M to
®
OSC1
OSC2
S
) may be required for
R
OSC2
OSC1
MCP2210
F
MCP2210
(2)