T89C5121-ICUIL Atmel, T89C5121-ICUIL Datasheet - Page 41

• 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

4164G–SCR–07/06
Table 18. SCIIR Register
SCIIR (S:AEh, SCRS = 0)
Smart Card UART Interrupt
Identification Register (read only)
Reset Value = 0X00 0000b
Number
SCTBI
Bit
7
7
6
5
4
3
2
1
0
Bit Mnemonic Description
CVccERR
CIccERR
6
-
SCWTI
SCTBI
SCRI
SCTI
SCPI
-
CIccERR
5
SCIB transmit buffer interrupt
This bit is set by hardware when the Transmit Buffer is copied to the transmit
shift register of the Smart Card UART.
It is cleared by hardware when this register is read.
Reserved
The value read from this bit is indeterminate. Do not change this bit or write 0.
It is cleared by hardware when this register is read.
It is cleared by hardware when this register is read.
Smart card wait Timeout interrupt
This bit is set by hardware when the Smart Card Timer 0 times out.
It is cleared by hardware when this register is read.
Smart card transmit interrupt
This bit is set by hardware when the Smart Card UART completes a
character transmission.
It is cleared by hardware when this register is read.
Smart card receive interrupt
This bit is set by hardware when the Smart Card UART completes a
character reception.
It is cleared by hardware when this register is read.
Smart card parity error interrupt
This bit is set at the same time as SCTI or SCRI if a parity error is detected.
It is cleared by hardware when this register is read.
Card current status
This bit is set when the output current goes out of the current range.
Card voltage status
This bit is set when the output voltage goes out of the voltage range specified
by CVcc field.
CVccERR
4
SCWTI
3
SCTI
2
A/T8xC5121
SCRI
1
SCPI
0
41