ST7DALIF2 STMicroelectronics, ST7DALIF2 Datasheet - Page 138

• Manufacturer Part Number: ST7DALIF2
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
• Manufacturer: STMicroelectronics

Specifications of ST7DALIF2

• 8 Kbytes Single Voltage Flash Program Memory With Read-out Protection, In-circuit Programming And In-application Programming (icp And Iap). 10k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55°C.
• 256 Bytes Data Eeprom With Read-out Protection. 300k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55°C.
• Clock Sources: Internal 1% RC oscillator, crystal/ceramic resonator or external clock
• Five Power Saving Modes: Halt, Active-Halt, Wait and Slow, Auto Wake Up From Halt

Electrical characteristics
20.5
20.5.1
138/171
Clock and timing characteristics
Subject to general operating conditions for V
Table 74.
1. Guaranteed by design. Not tested in production.
2. Data based on typical application software.
3. Time measured between interrupt event and interrupt vector fetch. Δt
Table 75.
1. Guaranteed by design.
Crystal and ceramic resonator oscillators
The ST7 internal clock can be supplied with eight different Crystal/Ceramic resonator
oscillators. All the information given in this paragraph are based on characterization results
with specified typical external components. In the application, the resonator and the load
capacitors have to be placed as close as possible to the oscillator pins in order to minimize
output distortion and start-up stabilization time. Refer to the crystal/ceramic resonator
manufacturer for more details (frequency, package, accuracy...).
Table 76.
1. When PLL is used, please refer to the PLL characteristics chapter and to
f
t
f
C
C
Symbol
Symbol
AWU
RCSRT
CrOSC
Symbol
t
L1
L2
c(INST)
t
needed to finish the current instruction execution.
clock management on page 32
v(IT)
AWU Oscillator
Frequency
AWU Oscillator startup
time
Instruction cycle time
Interrupt reaction time
t
Crystal Oscillator Frequency
Recommended load capacitance
versus equivalent serial
resistance of the crystal or
ceramic resonator (R
v(IT)
General timings
Auto wakeup from halt oscillator (AWU)
Oscillator characteristics
Parameter
= Δt
Parameter
c(INST)
Parameter
+ 10
(1)
(1)
(f
CrOSC
S
)
(3)
min. is 8 MHz with PLL).
(1)
Conditions
f
f
CPU
CPU
=8 MHz
=8 MHz
Conditions
DD
Conditions
, f
OSC
, and T
Min
50
c(INST)
A
.
1.25
Min
250
Section 9: Supply, reset and
Min
10
2
2
is the number of t
Typ
125
See table below
Typ
375
Typ
Max
3
250
50
(2)
1500
Max
Max
2.75
CPU
Unit
16
kHz
12
22
µs
ST7DALIF2
cycles
MHz
Unit
Unit
pF
t
t
ns
μs
CPU
CPU