T89C5121-ICUIL Atmel, T89C5121-ICUIL Datasheet - Page 95
T89C5121-ICUIL
Manufacturer Part Number
T89C5121-ICUIL
Description
IC 8051 MCU W/SMART CARD 24SSOP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.89C5121-SK1.pdf
(115 pages)
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
T89C5121-ICSIL
T89C5121-ICSIL
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4164G–SCR–07/06
Table 69. SIOCON Register
Serial Input Output Configuration Register
Register (91h)
Reset Value = 00XX 0000b
PMSOEN1
Number
7 - 6
5 - 4
1 - 0
Bit
3
2
7
Mnemonic Description
PMOSEN1
PMOSEN0
EVAUTO
PMSOEN0
CPRES
VEXT0
VEXT1
RES
Bit
-
6
Output Enable function on Txd/P3.1 and T0/P3.4:
PMSOEN1 PMSOEN0
0
0
1
1
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Card Presence pull-up resistor
0 Internal pull-up is connected
1 Internal pull-up is disconnected
EVCC Auto setup
Set to enable the Automatic mode of EV
Clear to disable the Automatic mode of EV
EVCC voltage configuration:
VEXT0 VEXT1
0
0
1
1
5
-
0
1
0
1
0
1
0
1
Power-down, EV
EV
EV
EV
CC
CC
CC
4
-
= 1.8V
= 2.3V
= 2.7V
PMOS is always off (reset value)
PMOS is always driven according to P3.1 or P3.4 value
PMOS is driven only when OE is high
PMOS is driven only when OE is low
CPRES
CC
RES
3
is external (reset value)
CC
regulator
CC
EVAUTO
regulator
2
A/T8xC5121
VEXT0
1
VEXT1
0
95
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