AT89C51SND1C-7HTUL Atmel, AT89C51SND1C-7HTUL Datasheet - Page 199

• Manufacturer Part Number: AT89C51SND1C-7HTUL
• Description: IC MCU 64KB FLASH MEM 81-CBGA
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51SND1C-7HTUL

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, IDE/ATAPI, MMC, SPI, UART/USART, USB
• Peripherals: Audio, I²S, MP3, PCM, POR, WDT
• Number Of I /o: 44
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 2x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 81-CBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

23.4.4
23.4.4.1
23.4.4.2
4109L–8051–02/08
Analog to Digital Converter
Definition of symbols
Characteristics
Table 177. Analog to Digital Converter Timing Symbol Definitions
Table 178. Analog to Digital Converter AC Characteristics
V
Notes:
DD
= 2.7 to 3.3 V, T
1. AV
2. The differential non-linearity is the difference between the actual step width and the ideal step
3. The integral non-linearity is the peak difference between the center of the actual step and the
4. The offset error is the absolute difference between the straight line which fits the actual trans-
5. The gain error is the relative difference in percent between the straight line which fits the actual
C
E
S
T
T
T
DLe
ILe
OSe
Ge
CLCL
EHSH
SHSL
width (see Figure 23-22).
ideal transfer curve after appropriate adjustment of gain and offset errors (see Figure 23-22).
fer curve (after removing of gain error), and the straight line which fits the ideal transfer curve
(see Figure 23-22).
transfer curve (after removing of offset error), and the straight line which fits the ideal transfer
curve (see Figure 23-22).
Symbol
DD
= AV
REFP
A
= -40 to +85°C
Signals
= 3.0 V, AV
Clock
Enable (ADEN bit)
Start Conversion
(ADSST bit)
Clock Period
Start-up Time
Conversion Time
Differential non-
linearity error
Integral non-
linearity errorss
Offset error
Gain error
Parameter
SS
(1)(5)
(1)(4)
= AV
(1)(2)
(1)(3)
REFN
= 0 V. ADC is monotonic with no missing code.
Min
4
H
L
AT8xC51SND1C
11·T
Max
4
1
2
4
4
CLCL
Conditions
High
Low
Unit
LSB
LSB
LSB
LSB
µs
µs
µs
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