ST62T18CB6 STMicroelectronics, ST62T18CB6 Datasheet - Page 58

• Manufacturer Part Number: ST62T18CB6
• Description: 8-bit Microcontrollers - MCU OTP EPROM 8K SPI/UAR
• Manufacturer: STMicroelectronics

Specifications of ST62T18CB6

• Core: ST6
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 7948 B
• Data Ram Size: 192 B
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 6 V
• Package / Case: PDIP-20
• Mounting Style: Through Hole
• A/d Bit Size: 8 bit
• A/d Channels Available: 7
• Data Rom Size: 64 B
• Interface Type: UART
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 12
• Number Of Timers: 1
• Program Memory Type: EPROM
• Factory Pack Quantity: 20
• Supply Voltage - Max: 6 V
• Supply Voltage - Min: 3.6 V

ST62T18C/E18C
5.3 INSTRUCTION SET
The ST6 core offers a set of 40 basic instructions
which, when combined with nine addressing
modes, yield 244 usable opcodes. They can be di-
vided into six different types: load/store, arithme-
tic/logic, conditional branch, control instructions,
jump/call, and bit manipulation. The following par-
agraphs describe the different types.
All the instructions belonging to a given type are
presented in individual tables.
Table 20. Load & Store Instructions
Notes:
X,Y. Indirect Register Pointers, V & W Short Direct Registers
# .
rr.
* .
58/82
58
LD A, X
LD A, Y
LD A, V
LD A, W
LD X, A
LD Y, A
LD V, A
LD W, A
LD A, rr
LD rr, A
LD A, (X)
LD A, (Y)
LD (X), A
LD (Y), A
LDI rr, #N
.
LDI A, #N
Immediate data (stored in ROM memory)
Data space register
Affected
Not Affected
Instruction
Indirect
Indirect
Immediate
Short Direct
Short Direct
Short Direct
Short Direct
Short Direct
Short Direct
Short Direct
Short Direct
Direct
Direct
Indirect
Indirect
Immediate
Addressing Mode
Load & Store. These instructions use one, two or
three bytes in relation with the addressing mode.
One operand is the Accumulator for LOAD and the
other operand is obtained from data memory using
one of the addressing modes.
For Load Immediate one operand can be any of
the 256 data space bytes while the other is always
immediate data.
Bytes
1
1
1
1
1
1
1
1
2
2
1
1
1
1
2
3
Cycles
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Z
*
Flags
C
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*