MC9S08AC16CFDE Freescale Semiconductor, MC9S08AC16CFDE Datasheet - Page 235
![IC MCU 8BIT 16K FLASH 48-QFN](/photos/12/16/121633/mc9s08ac16cfde_sml.jpg)
MC9S08AC16CFDE
Manufacturer Part Number
MC9S08AC16CFDE
Description
IC MCU 8BIT 16K FLASH 48-QFN
Manufacturer
Freescale Semiconductor
Series
HCS08r
Datasheet
1.MC9S08AC8CFGE.pdf
(336 pages)
Specifications of MC9S08AC16CFDE
Core Processor
HCS08
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
38
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-QFN
Processor Series
S08AC
Core
HCS08
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
SCI/SPI
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
38
Number Of Timers
8
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWS08
Development Tools By Supplier
DEMO9S08AC60E, DEMOACEX, DEMOACKIT, DCF51AC256, DC9S08AC128, DC9S08AC16, DC9S08AC60, DEMO51AC256KIT
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
Controller Family/series
HCS08
No. Of I/o's
38
Ram Memory Size
1KB
Cpu Speed
40MHz
No. Of Timers
3
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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13.4
This section provides a complete functional description of the IIC module.
13.4.1
The IIC bus system uses a serial data line (SDA) and a serial clock line (SCL) for data transfer. All devices
connected to it must have open drain or open collector outputs. A logic AND function is exercised on both
lines with external pull-up resistors. The value of these resistors is system dependent.
Normally, a standard communication is composed of four parts:
The stop signal should not be confused with the CPU stop instruction. The IIC bus system communication
is described briefly in the following sections and illustrated in
13.4.1.1
When the bus is free, no master device is engaging the bus (SCL and SDA lines are at logical high), a
master may initiate communication by sending a start signal. As shown in
defined as a high-to-low transition of SDA while SCL is high. This signal denotes the beginning of a new
data transfer (each data transfer may contain several bytes of data) and brings all slaves out of their idle
states.
Freescale Semiconductor
•
•
•
•
SCL
SDA
SCL
SDA
Start signal
Slave address transmission
Data transfer
Stop signal
Functional Description
Signal
Signal
Start
Start
IIC Protocol
Start Signal
msb
AD7 AD6 AD5 AD4 AD3 AD2 AD1 R/W
msb
AD7 AD6 AD5 AD4 AD3 AD2 AD1 R/W
1
1
2
2
Calling Address
Calling Address
3
3
4
4
5
5
Figure 13-9. IIC Bus Transmission Signals
MC9S08AC16 Series Data Sheet, Rev. 8
6
6
7
7
Read/
Read/
Write
Write
lsb
lsb
8
8
Ack
Ack
Bit
9
Bit
9
XX
Repeated
XXX
Signal
Start
msb
msb
AD7 AD6 AD5 AD4 AD3 AD2 AD1 R/W
D7
1
1
Figure
D6
2
2
New Calling Address
D5
3
3
13-9.
Data Byte
D4
4
4
D3
Figure
5
5
Inter-Integrated Circuit (S08IICV2)
D2
6
6
13-9, a start signal is
D1
7
7
Read/
Write
lsb
lsb
D0
8
8
Ack
No
Bit
Ack
No
9
Bit
9
Signal
Stop
Signal
Stop
235
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