ST62T20CM6 STMicroelectronics, ST62T20CM6 Datasheet - Page 27

• Manufacturer Part Number: ST62T20CM6
• Description: IC MCU 8BIT OTP 4K 20 SOIC
• Manufacturer: STMicroelectronics
• Series: ST6r

Specifications of ST62T20CM6

• Core Processor: ST6
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LVD, POR, WDT
• Number Of I /o: 12
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: OTP
• Ram Size: 64 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 6 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SOIC (7.5mm Width)
• Controller Family/series: ST6
• No. Of I/o's: 12
• Ram Memory Size: 64Byte
• Cpu Speed: 8MHz
• No. Of Timers: 2
• Rohs Compliant: Yes
• Processor Series: ST62T2x
• Core: ST6
• Data Bus Width: 8 bit
• Data Ram Size: 64 B
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 2
• Operating Supply Voltage: 3 V to 6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: ST622XC-KIT/110, 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
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details
• Other names: 497-2099-5

5.4 INTERRUPTS
The ST6 core may be interrupted by four maska-
ble interrupt sources, in addition to a Non Maska-
ble Interrupt (NMI) source. The interrupt process-
ing flowchart is shown in
Maskable interrupts must be enabled by setting
the GEN bit in the IOR register. However, even if
they are disabled (GEN bit = 0), interrupt events
are latched and may be processed as soon as the
GEN bit is set.
Each source is associated with a specific Interrupt
Vector, located in Program space (see
the vector location, the user must write a Jump in-
Figure 17. Interrupts Block Diagram
PB0...PB7
PA0...PA3
* Depending on device. See device summary on page 1.
NMI
I/O PORT REGISTER
“INPUT WITH INTERRUPT”
CONFIGURATION
CONFIGURATION
I/O PORT REGISTER
“INPUT WITH INTERRUPT”
A/D CONVERTER *
V D D
Figure
TIMER
(ADCR REGISTER)
(TSCR REGISTER)
18.
(IOR REGISTER)
LATCH
EOC BIT
TMZ BIT
EAI BIT
ETI BIT
Table
AT START OF VECTOR #0 ROUTINE
CLEARED BY H/W
CLEARED BY H/W
AT START OF
VECTOR #1 ROUTINE
ESB BIT
8). In
LATCH
BY H/W AT START OF
VECTOR #2 ROUTINE
CLEARED
struction to the associated interrupt service rou-
tine.
When an interrupt source generates an interrupt
request, the PC register is loaded with the address
of the interrupt vector, which then causes a Jump
to the relevant interrupt service routine, thus serv-
icing the interrupt.
Interrupt are triggered by events either on external
pins, or from the on-chip peripherals. Several
events can be ORed on the same interrupt vector.
On-chip peripherals have flag registers to deter-
mine which event triggered the interrupt.
LATCH
(IOR REGISTER)
ST6208C/ST6209C/ST6210C/ST6220C
(IOR REGISTER)
LES BIT
0
1
GEN BIT
VECTOR #0
VECTOR #1
VECTOR #3
VECTOR #4
VECTOR #2
EXIT FROM
STOP/WAIT
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