參數資料
型號: 78058F
廠商: NEC Corp.
英文描述: common to 78K/0 Series
中文描述: 普通的78K / 0系列
文件頁數: 15/129頁
文件大?。?/td> 644K
代理商: 78058F
15
CHAPTER 2 REGISTERS
User's Manual U12326EJ4V0UM
(1) Interrupt enable flag (IE)
This flag controls the interrupt request acknowledgement operations of the CPU.
When IE = 0, the IE flag is set to interrupt disable (DI), and interrupts other than non-maskable interrupts
are all disabled.
When IE = 1, the IE flag is set to interrupt enable (EI), and interrupt request acknowledgement is controlled
by an in-service priority flag (ISP), an interrupt mask flag for various interrupt sources, and a priority
specification flag.
This flag is reset (0) upon DI instruction execution or interrupt request acknowledgment and is set (1) upon
execution of the EI instruction.
(2) Zero flag (Z)
When the operation result is zero, this flag is set (1). It is reset (0) in all other cases.
(3) Register bank select flags (RBS0 and RBS1)
These are 2-bit flags used to select one of the four register banks.
In these flags, the 2-bit information that indicates the register bank selected by SBL RBn instruction
execution is stored.
(4) Auxiliary carry flag (AC)
If the operation result has a carry from bit 3 or a borrow at bit 3, this flag is set (1). It is reset (0) in all other
cases.
(5) In-service priority flag (ISP)
This flag manages the priority of acknowledgeable maskable vectored interrupts. When ISP = 0, vectored
interrupt requests specified as low priority by the priority specification flag register (PR) are disabled for
acknowledgment. Actual acknowledgment for interrupt requests is controlled by the state of the interrupt
enable flag (IE).
(6) Carry flag (CY)
This flag stores an overflow or underflow upon add/subtract instruction execution. It stores the shift-out
value upon rotate instruction execution and functions as a bit accumulator during bit manipulation
instruction execution.
相關PDF資料
PDF描述
780001 Common to 78K/0 Series
780018Y Common to 78K/0 Series
780024 Common to 78K/0 Series
780024Y Common to 78K/0 Series
780034 TL Series Toggle Switch, 1 pole, 3 position, Screw terminal, Locking Lever, Military Part Number MS24658-27N
相關代理商/技術參數
參數描述
78058FY 制造商:NEC 制造商全稱:NEC 功能描述:Common to 78K/0 Series
78059-001 功能描述:集管和線殼 OCTOGONAL NUT RoHS:否 產品種類:1.0MM Rectangular Connectors 產品類型:Headers - Pin Strip 系列:DF50 觸點類型:Pin (Male) 節(jié)距:1 mm 位置/觸點數量:16 排數:1 安裝風格:SMD/SMT 安裝角:Right 端接類型:Solder 外殼材料:Liquid Crystal Polymer (LCP) 觸點材料:Brass 觸點電鍍:Gold 制造商:Hirose Connector
78059-001LF 功能描述:高速/模塊連接器 HPC OCTAGON #2-56 MOUNTING NUT RoHS:否 制造商:Molex 系列:iPass 產品類型: 排數: 列數: 位置/觸點數量:38 安裝角:Right 節(jié)距:0.8 mm 安裝風格:Plug 端接類型:SMD/SMT 外殼材料:Thermoplastic 觸點材料:High Performance Alloy (HPA) 觸點電鍍:Gold
78059-002 功能描述:高速/模塊連接器 HPC OCTAGON #2-56-MOUNTING NUT RoHS:否 制造商:Molex 系列:iPass 產品類型: 排數: 列數: 位置/觸點數量:38 安裝角:Right 節(jié)距:0.8 mm 安裝風格:Plug 端接類型:SMD/SMT 外殼材料:Thermoplastic 觸點材料:High Performance Alloy (HPA) 觸點電鍍:Gold
78059-002LF 功能描述:高速/模塊連接器 HPC OCTAGON #2-56 MOUNTING NUT RoHS:否 制造商:Molex 系列:iPass 產品類型: 排數: 列數: 位置/觸點數量:38 安裝角:Right 節(jié)距:0.8 mm 安裝風格:Plug 端接類型:SMD/SMT 外殼材料:Thermoplastic 觸點材料:High Performance Alloy (HPA) 觸點電鍍:Gold