ST92T141K4M6 STMicroelectronics, ST92T141K4M6 Datasheet - Page 30

• Manufacturer Part Number: ST92T141K4M6
• Description: Microcontrollers (MCU) OTP EPROM 16K SPI
• Manufacturer: STMicroelectronics

Specifications of ST92T141K4M6

• Data Bus Width: 8 bit, 16 bit
• Program Memory Type: EPROM
• Program Memory Size: 16 KB
• Data Ram Size: 512 B
• Interface Type: SPI
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 15
• Number Of Timers: 2
• Operating Supply Voltage: 4.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SO-34
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 6 Channel
• Lead Free Status / Rohs Status: No

ST92141 - DEVICE ARCHITECTURE
SYSTEM REGISTERS (Cont’d)
USER STACK POINTER HIGH REGISTER
(USPHR)
R236 - Read/Write
Register Group: E (System)
Reset value: undefined
USER STACK POINTER LOW REGISTER
(USPLR)
R237 - Read/Write
Register Group: E (System)
Reset value: undefined
Figure 9. Internal Stack Mode
30/179
USP15 USP14 USP13 USP12 USP11 USP10 USP9
USP7 USP6 USP5 USP4 USP3 USP2 USP1 USP0
7
7
1
4
3
2
1
0
F
E
D
REGISTER
STACK
FILE
STACK POINTER (LOW)
points to:
USP8
0
0
SYSTEM STACK POINTER HIGH REGISTER
(SSPHR)
R238 - Read/Write
Register Group: E (System)
Reset value: undefined
SYSTEM STACK POINTER LOW REGISTER
(SSPLR)
R239 - Read/Write
Register Group: E (System)
Reset value: undefined
Figure 10. External Stack Mode
SSP15 SSP14 SSP13 SSP12 SSP11 SSP10 SSP9
SSP7 SSP6
7
7
4
3
2
1
0
F
E
D
REGISTER
FILE
SSP5
SSP4 SSP3
STACK POINTER (HIGH)
STACK POINTER (LOW)
point to:
&
SSP2 SSP1
MEMORY
STACK
SSP8
SSP0
0
0