AT89C5122D-RDRIM Atmel, AT89C5122D-RDRIM Datasheet - Page 50
AT89C5122D-RDRIM
Manufacturer Part Number
AT89C5122D-RDRIM
Description
IC MCU 80C51 W/SMART CARD 64VQFP
Manufacturer
Atmel
Series
89Cr
Specifications of AT89C5122D-RDRIM
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
AT89C5122DRDRIMTR
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AT83R5122, AT8xC5122/23
Table 27. Clock Configuration Register 1 - CKCON1 (S:AFh) only for AT8xC5122
Reset Value = XXXX XXX0b
Table 28. PLL Control Register - PLLCON (S:A3h)
Reset Value = 0000 0000b
Table 29. PLL Divider Register - PLLDIV (S:A4h)
Reset Value = 0000 0000b
Bit Number Bit Mnemonic Description
Bit Number Bit Mnemonic Description
Bit Number Bit Mnemonic Description
7 - 4
7 - 3
7 - 4
3 - 0
R3
7
7
7
-
-
3
0
2
1
0
PLOCK
R2
PLLEN
6
6
EXT48
6
SPIX2
-
-
R3:0
N3:0
-
-
-
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.
SPI clock
This control bit is validated when the CPU clock X2 is set. When X2 is low,
this bit has no effect.
Cleared to bypass the 1/2 prescaler.
Set to select the 1/2 output for this peripheral.
Reserved
The value read from these bits is always 0. Do not set this bits.
External 48 MHz Enable Bit
Set this bit to select XTAL1 as USB clock.
Clear this bit to select PLL as USB clock.
SCIB clock is controlled by EXT48 bit and XTSCS bit.
PLL Enable bit
Set to enable the PLL.
Clear to disable the PLL.
PLL Lock Indicator
Set by hardware when PLL is locked
Clear by hardware when PLL is unlocked
PLL R Divider Bits
PLL N Divider Bits
R1
5
5
5
-
-
R0
4
4
4
-
-
N3
3
3
3
-
-
EXT48
N2
2
2
2
-
PLLEN
N1
1
1
1
-
4202F–SCR–07/2008
PLOCK
SPIX2
N0
0
0
0
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