• One Serial Peripheral Interface (SPI) Controller
- Master Only SPI Controller
- Mappable to three ports (only 1 port active at a
time)
- 1 shared SPI Interface.
- 1 General Purpose SPI Interface (package
dependent)
- 1 Crisis recovery SPI Interface (located on
Keyboard Matrix Scan connector)
- Dual and Quad I/O Support
-
-
-
-
DS00001956E-page 2
2015 - 2016 Microchip Technology Inc.
MEC140x/1x
- Flexible Clock Rates
- SPI Burst Capable
- SPI Controller Operates with Internal DMA Con-
troller with CRC Generation
Up To Two BC-Link Interconnection Bus
ADC Interface
- Up to 8 Channels
- 10-bit Conversion in 10s
- Integral Non-Linearity of ±0.5 LSB; Differential
Non-Linearity of ±0.5 LSB
- External Analog Voltage Reference
DAC Interface
- Up to 2 Channels
- 8 Bit Resolution
- External Analog Voltage Reference
FAN Support
- Up to 8 Programmable Pulse-Width Modulator
(PWM) Outputs, for Fan or General Use
- Multiple Clock Rates
- 16-Bit ON & 16-Bit OFF Counters
- Up to Two Fan Tachometer Inputs,
- 16 Bit Resolution
• Universal Asynchronous Receiver Transmitter
(UART)
- Full function Serial Port or 2-Pin Debug Port
(product dependent)
- High Speed NS16C550A Compatible UART with
Send/Receive 16-Byte FIFOs
- Accessible from Host and EC
- Full Duplex Operation
- Programmable Input/output Pin Polarity Inver-
sion
- Programmable Main Power or Standby Power
Functionality
- Standard Baud Rates to 115.2 Kbps, Custom
Baud Rates to 1.5 Mbps
• Package
- 128 VTQFP RoHS Compliant Package
- 144 WFBGA RoHS Compliant Package
•
•
•
•
Products
Note:
This table shows the total number of instances available per product. However, not all features may be
used simultaneously since they are multiplexed on the same pins. See the Pin Description chapter to deter-
mine specific chip configuration options.
Keyboard Matrix Scan
Controller
BC-Link Interfaces
SMBus 2.0 Ports
PS/2 Controllers
Catalog Part
Number
Package
SRAM
Host
Memory
Interfaces (Code +
Data)
SPI Interfaces
TACHs
2
2
2
2
2
2
GPIOs
PWMs
MEC1404-NU
MEC1404-SZ
MEC1406-NU
MEC1406-SZ
MEC1408-NU
MEC1408-SZ
MEC1414-NU
MEC1414-SZ
MEC1416-NU
MEC1416-SZ
MEC1418-NU
MEC1418-SZ
• LPC
144-WFBGA • I2C
• LPC
144-WFBGA • I2C
• LPC
144-WFBGA • I2C
• LPC
144-WFBGA • I2C
• eSPI
• LPC
144-WFBGA • I2C
• eSPI
• LPC
144-WFBGA • I2C
• eSPI
128-VTQFP
128-VTQFP
128-VTQFP
128-VTQFP
128-VTQFP
128-VTQFP
128 kB
160 kB
192 kB
128 kB
Yes
Yes
Yes
Yes
6
6
6
6
2
2
2
2
106
106
106
106
3
3
3
3
2
2
2
2
8
8
8
8
2
2
2
2
8
8
8
8
full
full
full
full
160 kB
Yes
6
2
106
3
2
8
2
8
full
192 kB
Yes
6
2
106
3
2
8
2
8
full
2015 - 2016 Microchip Technology Inc.
DS00001956E-page 3
UART
ADCs
DAC
MEC140x/1x
TO OUR VALUED CUSTOMERS
It is our intention to provide our valued customers with the best documentation possible to ensure successful use of
your Microchip products. To this end, we will continue to improve our publications to better suit your needs. Our pub-
lications will be refined and enhanced as new volumes and updates are introduced.
If you have any questions or comments regarding this publication, please contact the Marketing Communications
Department via E-mail at
docerrors@microchip.com.
We welcome your feedback.
Most Current Data Sheet
To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at:
http://www.microchip.com
You can determine the version of a data sheet by examining its literature number found on the bottom outside corner
of any page. The last character of the literature number is the version number, (e.g., DS30000000A is version A of
document DS30000000).
Errata
An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may
exist for current devices. As device/documentation issues become known to us, we will publish an errata sheet. The
errata will specify the revision of silicon and revision of document to which it applies.
To determine if an errata sheet exists for a particular device, please check with one of the following:
• Microchip’s Worldwide Web site;
http://www.microchip.com
• Your local Microchip sales office (see last page)
When contacting a sales office, please specify which device, revision of silicon and data sheet (include -literature
number) you are using.
Customer Notification System
Register on our web site at
www.microchip.com
to receive the most current information on all of our products.
DS00001956E-page 4
2015 - 2016 Microchip Technology Inc.
MEC140x/1x
Table Of Contents
1.0 General Description ........................................................................................................................................................................ 6
32.0 Trace FIFO Debug Port (TFDP) ................................................................................................................................................ 420
33.0 Port 80 BIOS Debug Port .......................................................................................................................................................... 425
37.0 VBAT-Powered Control Interface .............................................................................................................................................. 446
38.0 Analog to Digital Converter ....................................................................................................................................................... 457
39.0 Digital to Analog Converter ....................................................................................................................................................... 466
40.0 Analog Comparator ................................................................................................................................................................... 472
41.0 Test Mechanisms ...................................................................................................................................................................... 475
The Microchip Web Site .................................................................................................................................................................... 568
Customer Change Notification Service ............................................................................................................................................. 568
Customer Support ............................................................................................................................................................................. 568
Product Identification System ........................................................................................................................................................... 569
