UPSD325X datasheet(71/176 Pages) STMICROELECTRONICS

Part #	UPSD325X

Description	Flash Programmable System Devices with 8032 Microcontroller Core and 256Kbit SRAM

PDF	176 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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µPSD325X DEVICES

Table 46. ADC SFR Memory Map

Table 47. Description of the ACON Bits

Table 48. ADC Clock Input

SFR

Addr

Reg

Name

Bit Register Name

Reset

Value

Comments

321

ASCL

8-bit

Prescaler for

ADC clock

ADAT

ADAT7

ADAT6

ADAT5

ADAT4

ADAT3

ADAT2

ADAT1

ADAT0

ADC Data

ACON

ADEN

ADS1

ADS0

ADST

ADSF

ADC Control

Bit

Symbol

Function

7 to 6

—

Reserved

ADEN

ADC Enable Bit:

0 : ADC shut off and consumes no operating current

1 : enable ADC

—

Reserved

3 to 2

ADS1, ADS0

Analog channel select

0, 0

Channel0 (ACH0)

0, 1

Channel1 (ACH1)

1, 0

Channel2 (ACH2)

1, 1

Channel3 (ACH3)

ADST

ADC Start Bit:

0 : force to zero

1 : start an ADC; after one cycle, bit is cleared to '0'

ADSF

ADC Status Bit:

0 : A/D conversion is in process

1 : A/D conversion is completed, not in process

MCU Clock Frequency

Prescaler Register Value

ADC Clock

40MHz

6.7MHz

36MHz

6MHz

24MHz

6MHz

12MHz

6MHz

UPSD325X Datasheet(PDF) 71 Page - STMicroelectronics

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