ST92124JDR9TB View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST92124JDR9TB

8/16-BIT SINGLE VOLTAGE FLASH MCU FAMILY WITH RAM, E³ ™ (EMULATED EEPROM), CAN 2.0B AND J1850 BLPD

STMicroelectronics 

ST92F124/F150/F250 - DEVICE ARCHITECTURE

SYSTEM REGISTERS (Cont’d)

USER STACK POINTER HIGH REGISTER

(USPHR)

R236 - Read/Write

Register Group: E (System)

Reset value: undefined

7

0

USP15 USP14 USP13 USP12 USP11 USP10 USP9 USP8

SYSTEM STACK POINTER HIGH REGISTER

(SSPHR)

R238 - Read/Write

Register Group: E (System)

Reset value: undefined

7

0

SSP15 SSP14 SSP13 SSP12 SSP11 SSP10 SSP9 SSP8

USER STACK POINTER LOW REGISTER

(USPLR)

R237 - Read/Write

Register Group: E (System)

Reset value: undefined

7

0

USP7 USP6 USP5 USP4 USP3 USP2 USP1 USP0

SYSTEM STACK POINTER LOW REGISTER

(SSPLR)

R239 - Read/Write

Register Group: E (System)

Reset value: undefined

7

0

SSP7 SSP6 SSP5 SSP4 SSP3 SSP2 SSP1 SSP0

Figure 24. Internal Stack Mode

Figure 25. External Stack Mode

REGISTER

FILE

F

STACK POINTER (LOW)

points to:

E

STACK

D

REGISTER

FILE

F

E

STACK POINTER (LOW)

&

STACK POINTER (HIGH)

point to:

MEMORY

D

STACK

4

4

3

3

2

2

1

1

0

0

41/429

9

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