ST7FOXK1 STMicroelectronics, ST7FOXK1 Datasheet - Page 211

• 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
13
13.1
13.1.1
Device configuration and ordering information
This device is available for production in user programmable version (Flash).
ST7FOX XFlash devices are shipped to customers with a default program memory content
(FFh).
Option bytes
The two option bytes allow the hardware configuration of the microcontroller to be selected.
The option bytes can be accessed only in programming mode (for example using a standard
ST7 programming tool).
Option byte 1
Bits 7:6 = CKSEL[1:0] Start-up clock selection.
Table 92.
Bits 5:3 = Reserved, must always be 1.
Bit 2 = LVD Low Voltage Detection selection.
Bit 1 = WDG SW Hardware or software watchdog
Bit 0 = WDG HALT Watchdog Reset on Halt
These bits are used to select the startup frequency. By default, the internal RC is
selected.
This option bit enables the low voltage detection block (LVD).
0: LVD on
1: LVD off (default value)
This option bit selects the watchdog type.
0: Hardware (watchdog always enabled)
1: Software (watchdog to be enabled by software)
This option bit determines if a Reset is generated when entering Halt mode while the
Watchdog is active.
0: No Reset generation when entering Halt mode
1: Reset generation when entering Halt mode
Startup clock selection
External crystal/ceramic resonator
Internal RC as Startup Clock
AWU RC as a Startup Clock
Configuration
External Clock
Device configuration and ordering information
CKSEL1
0
0
1
1
CKSEL0
0
1
0
1
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