AT89C5132 Atmel Corporation, AT89C5132 Datasheet - Page 167

• 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

23.3.4.2
4173E–USB–09/07
Waveforms
(INPUT/OUTPUT)
(INPUT/OUTPUT)
SDA
SCL
V
Notes:
Figure 23-16. Two Wire Waveforms
DD
START or Repeated START condition
T
T
T
T
= 2.7 to 3.3 V, T
T
T
T
Symbol
SU
SU
SU
SU
HD
HD
SU
T
T
T
T
; DAT1
; DAT2
; DAT3
T
T
T
HIGH
; STO
LOW
; DAT
; STA
; STA
BUF
RC
RD
FC
FD
1. At 100 kbit/s. At other bit-rates this value is inversely proportional to the bit-rate of 100 kbit/s.
2. Determined by the external bus-line capacitance and the external bus-line pull-up resistor, this
3. Spikes on the SDA and SCL lines with a duration of less than 3·T
4. T
T
hd
must be < 1 µs.
mum capacitance on bus-lines SDA and
SCL= 400 pF.
;STA
CLCL
T
fd
= T
Start condition hold time
SCL low time
SCL high time
SCL rise time
SCL fall time
Data set-up time
SDA set-up time (before repeated START condition)
SDA set-up time (before STOP condition)
Data hold time
Repeated START set-up time
STOP condition set-up time
Bus free time
SDA rise time
SDA fall time
T
OSC
low
A
= one oscillator clock period.
= -40 to +85°C
T
T
rd
high
T
rc
Tsu;DAT1
Parameter
T
hd;
DAT
T
fc
STOP condition
Repeated START condition
Tsu;DAT
T
su;
DAT3
14·T
16·T
14·T
14·T
14·T
14·T
INPUT
250 ns
250 ns
250 ns
0.3 µs
0.3 µs
2
CLCL
T
Max
1 µs
0 ns
1 µs
Min
T
0.3 V
su
CLCL
CLCL
CLCL
CLCL
CLCL
CLCL
su
0.7 V
;STO
;STA
will be filtered out. Maxi-
AT89C5132
(4)
(4)
(4)
(4)
(4)
(4)
DD
DD
T
buf
START condition
20·T
8·T
OUTPUT
8·T
CLCL
4.0 µs
4.7 µs
4.0 µs
0.3 µs
4.7 µs
4.0 µs
4.7 µs
0.3 µs
CLCL
1 µs
Max
0.7 V
Min
CLCL
-
-
0.3 V
(2)
(4)
(2)
(4)
(1)
(1)
(1)
(1)
(3)
(1)
(1)
(1)
(3)
- T
- T
(4)
DD
DD
FC
RD
167