AT89C5122D-RDVIM Atmel, AT89C5122D-RDVIM Datasheet - Page 72
AT89C5122D-RDVIM
Manufacturer Part Number
AT89C5122D-RDVIM
Description
IC 8051 MCU W/SMART CARD 64VQFP
Manufacturer
Atmel
Series
89Cr
Datasheet
1.AT89C5122D-PSTUM.pdf
(208 pages)
Specifications of AT89C5122D-RDVIM
Core Processor
8051
Core Size
8-Bit
Speed
48MHz
Connectivity
SmartCard, SPI, UART/USART, USB
Peripherals
LED, POR, WDT
Number Of I /o
46
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
For Use With
AT89STK-10 - KIT EVAL APPL MASS STORAGEAT89STK-03 - KIT STARTER FOR MCU AT8XC5122/23
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Other names
AT89C5122D-RDTIM
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Additional Features
Clock
Card Presence Input
72
XTAL1 (MHz)
8
8
8
8
8
8
AT83R5122, AT8xC5122/23
EXT48
0
0
0
0
0
0
The CK_ISO input must be in the range 1 - 5 MHz according to ISO 7816.
The CK_ISO can be programmed up to 12 MHz. In this case, the timing specification of
the output buffer will not comply to ISO 7816.
Figure 40. Clock Diagram of the SCIB Block
Figure 41. Prescaler 2 Description
The division factor SCICLK must be smaller than 49. If it is greater or equal to 49, the
PR2 prescaler is locked.
See Figure 17 clock tree diagram in the clock controller chapter.
Table 42. Examples of Clock settings
The internal pull-up (weak pull-up) on Card Presence input can be disconnected in order
to reduce the consumption (CPRESRES, bit 3 in PMOD0).
In this case, an external resistor (typically 1 M ) must be externally tied to Vcc.
CPRES input can generate an interrupt (see Interrupt system section).
The detection level can be selected.
XTSCS
PLLCON.2
SCICLK.7
EXT48
CK_IDLE
CK_PLL or
CK_XTAL1
CK_PLL
CK_XTAL1
SCICLK
36
44
42
40
24
0
0
1
PR2
1/(2*(48 - SCICLK[5-0]))
PR2
Ck_cpu
Ck_ISO
SCIB
SCICLK[5:0]
CK_ ISO
=48
<48
12
4
8
6
2
1
CK_ISO
4202F–SCR–07/2008
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