ST7LITE49M STMicroelectronics, ST7LITE49M Datasheet - Page 17

• Manufacturer Part Number: ST7LITE49M
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST7LITE49M

• 4 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
• 128 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
• A/d Converter: 10 input channels

ST7LITE49M
3
Caution:
Register and memory mapping
As shown in
registers.
The available memory locations consist of 128 bytes of register locations, 384 bytes of
RAM, 128 bytes of data EEPROM and 4 Kbytes of Flash program memory. The RAM space
includes up to 128 bytes for the stack from 180h to 1FFh.
The highest address bytes contain the user reset and interrupt vectors.
The Flash memory contains two sectors (see
addressing space so the reset and interrupt vectors are located in Sector 0 (FFE0h-FFFFh).
The size of Flash Sector 0 and other device options are configurable by option bytes (refer
to
Memory locations marked as “Reserved” must never be accessed. Accessing a reserved
area can have unpredictable effects on the device.
Figure 4.
FFDFh
EFFFh
FFE0h
FFFFh
01FFh
0FFFh
0000h
007Fh
0080h
1000h
107Fh
1080h
F000h
0200h
Section 14.1 on page
Interrupt & reset vectors
(see
Figure
ST7LITE49M memory map
Data EEPROM
Flash memory
HW registers
(384 bytes)
(
seeTable 3
(128 bytes)
Reserved
Reserved
RAM
(4K)
Table
4, the MCU is capable of addressing 64 Kbytes of memories and I/O
16)
)
173).
Doc ID 13562 Rev 3
01FFh
00FFh
017Fh
0080h
0100h
0180h
Short addressing
RAM (zero page)
128 bytes Stack
Figure
program memory
(SECTOR 0)
RAM
(SECTOR 1)
4K Flash
3 Kbytes
1 Kbytes
4) mapped in the upper part of the ST7
Register and memory mapping
DEE0h
DEE1h
DEE2h
DEE3h
F000h
FFFFh
see
RCCRH0
RCCRL0
RCCRH1
RCCRL1
Section 7.1.1
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