AT89C5132 Atmel Corporation, AT89C5132 Datasheet - Page 170

• Manufacturer Part Number: AT89C5132
• Manufacturer: Atmel Corporation

Specifications of AT89C5132

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-12C
• Max I/o Pins: 44
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Uart: 1
• Adc Channels: 2
• Adc Resolution (bits): 10
• Adc Speed (ksps): 22.7
• Sram (kbytes): 2.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 3.6
• Timers: 2
• Isp: UART/USB
• Watchdog: Yes

23.3.7
23.3.7.1
23.3.7.2
170
AT89C5132
Analog to Digital Converter
Definition of Symbols
Characteristics
Table 120. Analog to Digital Converter Timing Symbol Definitions
Table 37. Analog to Digital Converter AC Characteristics
V
Notes:
T
T
T
DLe
ILe
OSe
Ge
DD
CLCL
EHSH
SHSL
= 2.7 to 3.3 V, T
Symbol
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
width (see Figure 23-20).
ideal transfer curve after appropriate adjustment of gain and offset errors (see Figure 23-20).
fer curve (after removing of gain error), and the straight line which fits the ideal transfer curve
(see Figure 23-20).
transfer curve (after removing of offset error), and the straight line which fits the ideal transfer
curve (see Figure 23-20).
DD
Signals
= 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
REFP
A
= -40 to +85°C
= 3.0 V, AV
Parameter
(1)(3)
(1)(5)
(1)(4)
(1)(2)
SS
= AV
REFN
= 0 V. ADC is monotonic with no missing code.
Min
4
11·T
Max
H
L
4
1
2
4
4
CLCL
Conditions
High
Low
4173E–USB–09/07
Unit
LSB
LSB
LSB
LSB
µs
µs
µs