TS80C32X2-LIE Atmel, TS80C32X2-LIE Datasheet - Page 19

• Manufacturer Part Number: TS80C32X2-LIE
• Description: IC MCU 8BIT 30/20MHZ 44-VQFP
• Manufacturer: Atmel
• Series: 80Cr

Specifications of TS80C32X2-LIE

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 30/20MHz
• Connectivity: UART/USART
• Peripherals: POR
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Broadcast Address
Reset Addresses
4184G–8051–09/06
1111 0000b).
For slave A, bit 1 is a 1; for slaves B and C, bit 1 is a don’t care bit. To communicate with
slaves B and C, but not slave A, the master must send an address with bits 0 and 1 both
set (e.g. 1111 0011b).
To communicate with slaves A, B and C, the master must send an address with bit 0
set, bit 1 clear, and bit 2 clear (e.g. 1111 0001b).
A broadcast address is formed from the logical OR of the SADDR and SADEN registers
with zeros defined as don’t-care bits, e.g.:
The use of don’t-care bits provides flexibility in defining the broadcast address, however
in most applications, a broadcast address is FFh. The following is an example of using
broadcast addresses:
For slaves A and B, bit 2 is a don’t care bit; for slave C, bit 2 is set. To communicate with
all of the slaves, the master must send an address FFh. To communicate with slaves A
and B, but not slave C, the master can send and address FBh.
On reset, the SADDR and SADEN registers are initialized to 00h, i.e. the given and
broadcast addresses are XXXX XXXXb (all don’t-care bits). This ensures that the serial
port will reply to any address, and so, that it is backwards compatible with the 80C51
microcontrollers that do not support automatic address recognition.
Table 7. SADEN Register
SADEN - Slave Address Mask Register (B9h)
Reset Value = 0000 0000b
Not bit addressable
Table 8. SADDR Register
SADDR - Slave Address Register (A9h)
Reset Value = 0000 0000b
Not bit addressable
Slave A:SADDR1111 0001b
Slave B:SADDR1111 0011b
Slave C:SADDR=1111 0010b
7
7
Broadcast =SADDR OR SADEN1111 111Xb
SADDR 0101 0110b
SADEN 1111 1100b
SADEN1111 1010b
Broadcast1111 1X11b,
SADEN1111 1001b
Broadcast1111 1X11B,
SADEN1111 1101b
Broadcast1111 1111b
6
6
5
5
4
4
3
3
2
2
TS8xCx2X2
1
1
0
0
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