PIC14000-04I/SS Microchip Technology, PIC14000-04I/SS Datasheet - Page 55
![IC, 8BIT MCU, PIC14, 4MHZ, SSOP-28](/photos/18/99/189938/3833516_sml.gif)
PIC14000-04I/SS
Manufacturer Part Number
PIC14000-04I/SS
Description
IC, 8BIT MCU, PIC14, 4MHZ, SSOP-28
Manufacturer
Microchip Technology
Datasheet
1.PIC14000-04SO.pdf
(153 pages)
Specifications of PIC14000-04I/SS
Controller Family/series
PIC14
No. Of I/o's
22
Ram Memory Size
192Byte
Cpu Speed
4MHz
No. Of Timers
2
Interface
I2C
Digital Ic Case Style
SSOP
Core Size
8 Bit
Program Memory Size
4096 X 14
Embedded Interface Type
I2C
Rohs Compliant
Yes
Processor Series
PIC14000
Core
PIC
Data Bus Width
8 bit
Program Memory Type
EPROM
Data Ram Size
192 B
Interface Type
SPI, UART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
22
Number Of Timers
1
Operating Supply Voltage
2.7 V to 6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
SSOP-28
Development Tools By Supplier
ICE2000
Minimum Operating Temperature
- 40 C
On-chip Adc
14 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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7.5.4
PIC14000 is compliant with the SMBus specification
published by Intel. Some key points to note regarding
the bus specifications and how it pertains to the
PIC14000 hardware are listed below:
• SMBus has fixed input voltage thresholds.
FIGURE 7-18: SMHOG STATE MACHINE
1996 Microchip Technology Inc.
PIC14000 I/O buffers have programmable levels
that can be selected to be compatible with both
SMBus threshold levels via the SMBus and
SPGND bits in the MISC register.
SMBus
CONSIDERATIONS
AND ACCESS.bus
I
2
CIF = 1
SCL = 0
E/DRIVE
LOW
SCL
SCL = 1
D
Preliminary
I
I
2
2
CIF = 0
CIF = 1
A
• A mechanism to stretch the I
SMHOG = 0
been implemented to support SMBus slave
transactions. The SMHOG bit (MISC<7>) allows
hardware to automatically force and hold the I
clock line low when a data byte has been
received. This prevents the SMBus master from
overflowing the receive buffer in instances where
the microcontroller may be to busy servicing
higher priority tasks to respond to a I
interrupt. Or, if the microcontroller is in SLEEP
mode and needs time to wake-up and respond to
the I
2
C interrupt.
C
I
2
CIF = 0
B
I
2
I
2
CIF = 1
CIF = 0
PIC14000
2
C clock time has
DS40122B-page 55
2
C module
2
C
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