ST7232AK2 STMicroelectronics, ST7232AK2 Datasheet - Page 122

• Manufacturer Part Number: ST7232AK2
• Description: 8-BIT MCU WITH 8K FLASH/ROM, ADC, 4 TIMERS, SPI, SCI INTERFACE
• Manufacturer: STMicroelectronics

Specifications of ST7232AK2

• Hdflash Endurance: 100 cycles, data retention
• Clock Sources: crystal/ceramic resonator oscillators and bypass for external clock
• Four Power Saving Modes: Halt, Active-Halt, Wait and Slow
• Main Clock Controller With: Real time base, Beep and Clock-out capabilities
• Two 16-bit Timers With: 2 input captures, 2 output compares, PWM and pulse generator modes

ST7232A
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
Notes:
1. Resonator characteristics given by the ceramic resonator manufacturer.
2. t
quick V
3. Resonators all have different characteristics. Contact the manufacturer to obtain the appropriate values of external
components and to verify oscillator performance.
4. 3rd overtone resonators require specific validation by the resonator manufacturer.
122/157
1
Oscil.
SU(OSC)
MP
MS
HS
LP
DD
ramp-up from 0 to 5V (<50µs).
is the typical oscillator start-up time measured between V
CSA2.00MG
CSA4.00MG
CSA8.00MTZ
CSA16.00MXZ040
Reference
Typical Ceramic Resonators (information for guidance only)
3)
4)
16MHz ∆f
Freq.
2MHz ∆f
4MHz ∆f
8MHz ∆f
OSC
OSC
OSC
OSC
=[±0.5%
=[±0.5%
=[±0.5%
=[±0.5%
tolerance
tolerance
tolerance
tolerance
Characteristic
,±0.3%
,±0.3%
,±0.5%
,±0.3%
DD
=2.8V and the fetch of the first instruction (with a
∆Ta
∆Ta
∆Ta
∆Ta
,±0.3%
,±0.3%
,±0.3%
,±0.3%
1)
aging
aging
aging
aging
,±x.x%
,±x.x%
,±x.x%
,±x.x%
correl
correl
correl
correl
] 22
] 22
] 33
] 33
[pF]
C
L1
[pF]
C
22
22
33
33
L2
t
[ms]
SU(osc)
0.7
4
2
1
2)