S9S08SG8E2VTJR Freescale Semiconductor, S9S08SG8E2VTJR Datasheet - Page 152

• Manufacturer Part Number: S9S08SG8E2VTJR
• Description: 8-bit Microcontrollers - MCU 9S08 UC W/ 8K 0.25UM SGF
• Manufacturer: Freescale Semiconductor

Specifications of S9S08SG8E2VTJR

• Rohs: yes
• Core: HCS08
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 40 MHz
• Program Memory Size: 8 KB
• Data Ram Size: 512 B
• On-chip Adc: Yes
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: TSSOP-20
• Mounting Style: SMD/SMT
• A/d Bit Size: 10 bit
• A/d Channels Available: 12
• Interface Type: I2C, SCI, SPI
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Program Memory Type: Flash
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 2.7 V

Chapter 9 Analog-to-Digital Converter (S08ADC10V1)
9.6
This section contains information for using the ADC module in applications. The ADC has been designed
for integration into a microcontroller used in embedded control applications requiring an A/D converter.
9.6.1
The following sections discuss the external pins associated with the ADC module and how they should be
used for best results.
9.6.1.1
The ADC module has analog power and ground supplies (V
some devices. V
V
the analog supplies which are bonded to the same pin as the corresponding digital supply so that some
degree of isolation between the supplies is maintained.
When available on a separate pin, both V
as their corresponding MCU digital supply (V
noise immunity and bypass capacitors placed as near as possible to the package.
146
SSA
and V
Application Information
External Pins and Routing
DDA
Analog Supply Pins
SSA
are shared with the MCU digital supply pins. In these cases, there are separate pads for
is shared on the same pin as the MCU digital V
Figure 9-13. Initialization Flowchart for Example
MC9S08SG32 Data Sheet, Rev. 8
DDA
CLEAR COCO BIT
THEN ADCRL TO
INITIALIZE ADC
ADCCFG = $98
ADCSC2 = $00
ADCSC1 = $41
READ ADCRH
CONTINUE
and V
COCO=1?
DD
CHECK
RESET
and V
YES
SSA
SS
must be connected to the same voltage potential
) and must be routed carefully for maximum
NO
DDA
and V
SS
on some devices. On other devices,
SSA
) available as separate pins on
Freescale Semiconductor