ST7FOXK1 STMicroelectronics, ST7FOXK1 Datasheet - Page 47

• Manufacturer Part Number: ST7FOXK1
• Description: Low cost flash 8bit micro
• Manufacturer: STMicroelectronics

Specifications of ST7FOXK1

• 4 To 8 Kbytes Single Voltage Extended Flash (xflash) Program Memory With Read-out Protection In-circuit Programming And In-application Programming (icp And Iap) Endurance: 1K write/erase cycles guaranteed Data retention
• Clock Sources: Internal trimmable 8 MHz RC oscillator, auto wakeup internal low power - low frequency oscillator, crystal/ceramic resonator or external clock
• Five Power Saving Modes: Halt, Active-Halt, Auto Wakeup from Halt, Wait and Slow
• A/d Converter: up to 10 input channels

ST7FOXF1, ST7FOXK1, ST7FOXK2
6.5.3
Note:
RC Control Register High (RCCRH)
Reset value: 1111 1111 (FFh)
Bits 7:0 = CR[9:2] RC Oscillator Frequency Adjustment bits
To tune the oscillator, write a series of different values in the register until the correct
frequency is reached. The fastest method is to use a dichotomy starting with 80h.
CR9
These bits must be written immediately after reset to adjust the RC oscillator
frequency. The application can store the correct value for each voltage range in Flash
memory and write it to this register at start-up.
00h = maximum available frequency
FFh = lowest available frequency
These bits are used with the CR[1:0] bits in the RCCRL register. Refer to
Chapter
7
6.5.4.
CR8
CR7
CR6
Read/write
CR5
Supply, reset and clock management
CR4
CR3
CR2
0
47/226