ADUC812BSZ Analog Devices Inc, ADUC812BSZ Datasheet - Page 30

• Manufacturer Part Number: ADUC812BSZ
• Description: IC ADC 12BIT MULTICH MCU 52-MQFP
• Manufacturer: Analog Devices Inc
• Series: MicroConverter® ADuC8xxr

Specifications of ADUC812BSZ

• Core Size: 8-Bit
• Program Memory Size: 8KB (8K x 8)
• Core Processor: 8052
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: PSM, Temp Sensor, WDT
• Number Of I /o: 34
• Program Memory Type: FLASH
• Eeprom Size: 640 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x12b, D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-MQFP, 52-PQFP
• Controller Family/series: (8051) 8052
• No. Of I/o's: 32
• Eeprom Memory Size: 8KB
• Ram Memory Size: 256Byte
• Cpu Speed: 1.3MIPS
• No. Of Timers: 3
• Package: 52MQFP
• Device Core: 8052
• Family Name: ADuC8xx
• Maximum Speed: 16 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 32
• Interface Type: I2C/SPI/TWI/UART
• On-chip Adc: 8-chx12-bit
• On-chip Dac: 2-chx12-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADuC812
User configuration and control of all Timer operating modes is achieved via three SFRs:
TMOD, TCON
T2CON
TMOD
SFR Address
Power-On Default Value
Bit Addressable
Bit
7
6
5
4
3
2
1
0
G
a
e t
Name
Gate
C/T
M1
M0
Gate
C/T
M1
M0
C
T /
Control and configuration for Timer 2.
Control and configuration for Timers 0 and 1.
Timer/Counter 0 and
1 Mode Register
89H
00H
No
Timer 1 Gating Control.
Timer 0 Gating Control.
Description
Set by software to enable Timer/Counter 1 only while INT1 pin is high and TR1 control bit is set.
Cleared by software to enable Timer 1 whenever TR1 control bit is set.
Timer 1 Timer or Counter Select Bit.
Set by software to select counter operation (input from T1 pin).
Cleared by software to select timer operation (input from internal system clock).
Timer 1 Mode Select Bit 1 (used with M0 Bit).
Timer 1 Mode Select Bit 0.
M1
0
0
1
1
Set by software to enable Timer/Counter 0 only while INT0 pin is high and TR0 control bit is set.
Cleared by software to enable Timer 0 whenever TR0 control bit is set.
Timer 0 Timer or Counter Select Bit.
Set by software to select counter operation (input from T0 pin).
Cleared by software to select timer operation (input from internal system clock).
Timer 0 Mode Select Bit 1.
Timer 0 Mode Select Bit 0.
M1
0
0
1
1
M
1
Table XV. TMOD SFR Bit Designations
M0
0
1
0
1
M0
0
1
0
1
M
0
TH1 operates as an 8-bit timer/counter. TL1 serves as 5-bit prescaler.
16-Bit Timer/Counter. TH1 and TL1 are cascaded; there is no prescaler.
8-Bit Autoreload Timer/Counter. TH1 holds a value that is to be
reloaded into TL1 each time it overflows.
Timer/Counter 1 Stopped.
TH0 operates as an 8-bit timer/counter. TL0 serves as 5-bit prescaler.
16-Bit Timer/Counter. TH0 and TL0 are cascaded; there is no prescaler.
8-Bit Autoreload Timer/Counter. TH0 holds a value that is to be
reloaded into TL0 each time it overflows.
TL0 is an 8-bit timer/counter controlled by the standard timer 0 control
bits. TH0 is an 8-bit timer only, controlled by Timer 1 control bits.
–30–
G
a
e t
C
T /
M
1
M
0
REV. E