ST7LITE49K2 STMicroelectronics, ST7LITE49K2 Datasheet - Page 231

• Manufacturer Part Number: ST7LITE49K2
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST7LITE49K2

• 8 Kbytes Single Voltage Extended Flash (xflash) Program Memory With Read-out Protection In-circuit Programming And In-application Programming (icp And Iap) Endurance: 10K write/erase cycles guaranteed Data retention
• 256 Bytes Data Eeprom With Read-out Protection. 300k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55 °C.
• 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

ST7LITE49K2
14.1.2
Note:
Bit 1 = WDG SW Hardware or software watchdog
Bit 0 = WDG HALT Watchdog Reset on Halt
Option byte 0
OPT 7 = AWUCK Auto-wakeup clock selection
If this bit is reset, OSCRANGE[2:0] must be set to 100.
OPT6:4 = OSCRANGE[2:0] Oscillator range
Table 108. Selection of the resonator oscillator range
1. When the internal RC oscillator is selected, the CLKSEL option bits must be kept at their default value in
OPT 3:2 = SEC[1:0] Sector 0 size definition
Typ. frequency range
order to select the 256 clock cycle delay (see
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
0: 32-kHz Oscillator (VLP) selected as AWU clock
1: AWU RC Oscillator selected as AWU clock.
When the internal RC oscillator is not selected (CKSEL1=1), these option bits (and
CKSEL0) select the range of the resonator oscillator current source or the external
clock source.
These option bits indicate the size of sector 0 according to
with Resonator
External Clock on OSC1/CLKIN
External Clock on PB1
Reserved
VLP
MP
MS
HS
LP
32.768 kHz
8~16 MHz
Section
1~2 MHz
2~4 MHz
4~8 MHz
Device configuration and ordering information
7.3).
2
0
0
0
0
1
1
1
1
Table
OSCRANGE
109.
1
0
0
1
1
0
0
1
1
(1)
231/245
0
0
1
0
1
0
1
0
1