ST62T65CM6 STMicroelectronics, ST62T65CM6 Datasheet - Page 24

• Manufacturer Part Number: ST62T65CM6
• Description: IC MCU 8BIT OTP/EPROM 28 PSOIC
• Manufacturer: STMicroelectronics
• Series: ST6r

Specifications of ST62T65CM6

• Core Processor: ST6
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI
• Peripherals: LED, LVD, POR, WDT
• Number Of I /o: 21
• Program Memory Size: 3.8KB (3.8K x 8)
• Program Memory Type: OTP
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 6 V
• Data Converters: A/D 13x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: ST6
• No. Of I/o's: 21
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 128Byte
• Cpu Speed: 8MHz
• No. Of Timers: 2
• Rohs Compliant: Yes
• Processor Series: ST62T6x
• Core: ST6
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: SCI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 21
• Number Of Timers: 1
• Operating Supply Voltage: 3 V to 6 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ST62GP-EMU2, ST62E2XC-EPB/110, ST62E6XC-EPB/US, STREALIZER-II
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2103-5

ST6255C ST6265C ST6265B
RESETS (Cont’d)
3.1.10 MCU Initialization Sequence
When a reset occurs the stack is reset, the PC is
loaded with the address of the Reset Vector (locat-
ed in program ROM starting at address 0FFEh). A
jump to the beginning of the user program must be
coded at this address. Following a Reset, the In-
terrupt flag is automatically set, so that the CPU is
in Non Maskable Interrupt mode; this prevents the
initialisation routine from being interrupted. The in-
itialisation routine should therefore be terminated
by a RETI instruction, in order to revert to normal
mode and enable interrupts. If no pending interrupt
is present at the end of the initialisation routine, the
MCU will continue by processing the instruction
immediately following the RETI instruction. If, how-
ever, a pending interrupt is present, it will be serv-
iced.
Figure 16. Reset Block Diagram
24/84
RESET
1) Resistive ESD protection. Value not guaranteed.
WATCHDOG RESET
POWER
LVD RESET
V
DD
ON RESET
R
PU
R
ESD
1)
f
OSC
AND. Wired
Figure 15. Reset and Interrupt Processing
VECTOR
RESET
RESET
INITIALIZATION
ROUTINE
RESET
CK
COUNTER
RESET
RETI
JP
JP:2 BYTES/4 CYCLES
RETI: 1 BYTE/2 CYCLES
ST6
INTERNAL
RESET
VR02107A
VA00181