T89C5121-ICUIL Atmel, T89C5121-ICUIL Datasheet - Page 94

• Manufacturer Part Number: T89C5121-ICUIL
• Description: IC 8051 MCU W/SMART CARD 24SSOP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of T89C5121-ICUIL

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SmartCard, UART/USART
• Peripherals: LED, POR, WDT
• Number Of I /o: 14
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: Flash RAM
• Eeprom Size: 16K x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 5.4 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 24-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -
• Other names: Q1468934; T89C5121-ICSIL; T89C5121-ICSIL

94
A/T8xC5121
Table 68. BDRCON Register
BDRCON
Baud Rate Control Register (9Bh)
Reset Value = XXX0 0000b
Number
Bit
7
6
5
4
3
2
1
0
7
-
Mnemonic Description
TBCK
RBCK
BRR
SRC
SPD
Bit
-
-
-
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit
Reserved
The value read from this bit is indeterminate. Do not set this bit
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Baud Rate Run Control bit
Clear to stop the Baud Rate.
Set to start the Baud Rate.
Transmission Baud rate Generator Selection bit for first UART
Clear to select Timer 1 for the Baud Rate Generator.
Set to select internal Baud Rate Generator.
Reception Baud Rate Generator Selection bit for first UART
Clear to select Timer 1 for the Baud Rate Generator.
Set to select internal Baud Rate Generator.
Baud Rate Speed Control bit for first UART
Clear to select the SLOW Baud Rate Generator when SRC = 1.
Set to select the FAST Baud Rate Generator when SRC = 1.
Baud Rate Source select bit in Mode 0 for first UART
Clear to select F
Set to select the internal Baud Rate Generator.
5
-
OSC
BRR
/12 as the Baud Rate Generator.
4
TBCK
3
RBCK
2
SPD
1
4164G–SCR–07/06
SRC
0