 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
HD6432126R Datasheet(PDF) 62 Page - Renesas Technology Corp |
|
|
|||||||||||||||||||||||||||||
HD6432126R Datasheet(HTML) 62 Page - Renesas Technology Corp |
|
|
62 / 843 page  38 Free area Stack area SP (ER7) Figure 2.9 Stack 2.4.3 Control Registers The control registers are the 24-bit program counter (PC), 8-bit extended control register (EXR), and 8-bit condition-code register (CCR). (1) Program Counter (PC): This 24-bit counter indicates the address of the next instruction the CPU will execute. The length of all CPU instructions is 2 bytes (one word), so the least significant PC bit is ignored. (When an instruction is fetched, the least significant PC bit is regarded as 0.) (2) Extended Control Register (EXR): An 8-bit register. In the H8S/2128 Series and H8S/2124 Series, this register does not affect operation. Bit 7—Trace Bit (T): This bit is reserved. In the H8S/2128 Series and H8S/2124 Series, this bit does not affect operation. Bits 6 to 3—Reserved: These bits are reserved. They are always read as 1. Bits 2 to 0—Interrupt Mask Bits (I2 to I0): These bits are reserved. In the H8S/2128 Series and H8S/2124 Series, these bits do not affect operation. (3) Condition-Code Register (CCR): This 8-bit register contains internal CPU status information, including an interrupt mask bit (I) and half-carry (H), negative (N), zero (Z), overflow (V), and carry (C) flags. Bit 7—Interrupt Mask Bit (I): Masks interrupts other than NMI when set to 1. (NMI is accepted regardless of the I bit setting.) The I bit is set to 1 by hardware at the start of an exception- handling sequence. For details, refer to section 5, Interrupt Controller. |
Similar Part No. - HD6432126R |
|
Similar Description - HD6432126R |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
