AT89LP216 Atmel Corporation, AT89LP216 Datasheet - Page 87

• Manufacturer Part Number: AT89LP216
• Manufacturer: Atmel Corporation

Specifications of AT89LP216

• Flash (kbytes): 2 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 14
• Spi: 1
• Uart: 1
• Sram (kbytes): 0.125
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 2
• Isp: SPI/OCD
• Watchdog: Yes

25.6
The values in this table are valid for V
Figure 25-17. Shift Register Mode Timing Waveform
25.7
25.7.1
Note:
25.7.2
Note:
3621E–MICRO–11/10
Symbol
t
t
t
t
t
XLXL
QVXH
XHQX
XHDX
XHDV
Serial Port Timing: Shift Register Mode Test Conditions
Test Conditions
1. AC Inputs during testing are driven at V
1. For timing purposes, a port pin is no longer floating when a 100 mV change from load voltage occurs. A port pin begins to
AC Testing Input/Output Waveform
Float Waveform
Write to SBUF
V
float when 100 mV change from the loaded V
Output Data
Parameter
Serial Port Clock Cycle Time
Output Data Setup to Clock Rising Edge
Output Data Hold after Clock Rising Edge
Input Data Hold after Clock Rising Edge
Input Data Valid to Clock Rising Edge
Input Data
IH
Clear RI
min. for a logic “1” and V
Clock
(1)
Valid
0
IL
CC
max. for a logic “0”.
= 2.4V to 5.5V and Load Capacitance = 80 pF.
Valid
1
CC
(1)
- 0.5V for a logic “1” and 0.45V for a logic “0”. Timing measurements are made at
OH
Valid
/V
OL
2
level occurs.
Valid
3
Valid
4
2t
t
t
Valid
CLCL
CLCL
CLCL
Min
5
15
Variable Oscillator
0
-15
-15
-15
Valid
6
AT89LP216
Max
Valid
7
Units
µs
ns
ns
ns
ns
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