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參數(shù)資料
| 型號(hào)： | R5F562N8ADBG#U0 |
| 廠商： | Renesas Electronics America |
| 文件頁數(shù)： | 88/148頁 |
| 文件大?。?/td> | 0K |
| 描述： | MCU 32BIT FLASH 512KROM 176LFBGA |
| 產(chǎn)品培訓(xùn)模塊： | RX Compare Match Timer RX DMAC |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | RX600 |
| 核心處理器： | RX |
| 芯體尺寸： | 32-位 |
| 速度： | 100MHz |
| 連通性： | EBI/EMI，I²C，SCI，SPI，USB |
| 外圍設(shè)備： | DMA，LVD，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 126 |
| 程序存儲(chǔ)器容量： | 512KB（512K x 8） |
| 程序存儲(chǔ)器類型： | 閃存 |
| RAM 容量： | 96K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 3.6 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 8x10/12b，D/A 2x10b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 176-LFBGA |
| 包裝： | 托盤 |
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PIC18F6520/8520/6620/8620/6720/8720
DS39609B-page 42
2004 Microchip Technology Inc.
4.2
Return Address Stack
The return address stack allows any combination of up
to 31 program calls and interrupts to occur. The PC
(Program Counter) is pushed onto the stack when a
CALL
or RCALL instruction is executed, or an interrupt
is Acknowledged. The PC value is pulled off the stack
on a RETURN, RETLW or a RETFIE instruction. PCLATU
and PCLATH are not affected by any of the RETURN or
CALL
instructions.
The stack operates as a 31-word by 21-bit RAM and a
5-bit stack pointer, with the stack pointer initialized to
00000b after all Resets. There is no RAM associated
with stack pointer 00000b. This is only a Reset value.
During a CALL type instruction, causing a push onto the
stack, the stack pointer is first incremented and the
RAM location pointed to by the stack pointer is written
with the contents of the PC. During a RETURN type
instruction, causing a pop from the stack, the contents
of the RAM location pointed to by the STKPTR are
transferred to the PC and then the stack pointer is
decremented.
The stack space is not part of either program or data
space. The stack pointer is readable and writable and
the address on the top of the stack is readable and writ-
able through SFR registers. Data can also be pushed
to, or popped from the stack using the top-of-stack
SFRs. Status bits indicate if the stack pointer is at, or
beyond the 31 levels provided.
4.2.1
TOP-OF-STACK ACCESS
The top of the stack is readable and writable. Three
register locations, TOSU, TOSH and TOSL, hold the
contents of the stack location pointed to by the
STKPTR register. This allows users to implement a
software stack if necessary. After a CALL, RCALL or
interrupt, the software can read the pushed value by
reading the TOSU, TOSH and TOSL registers. These
values can be placed on a user defined software stack.
At return time, the software can replace the TOSU,
TOSH and TOSL and do a return.
The user must disable the global interrupt enable bits
during
this
time
to
prevent
inadvertent
stack
operations.
4.2.2
RETURN STACK POINTER
(STKPTR)
The STKPTR register contains the stack pointer value,
the STKFUL (Stack Full) status bit and the STKUNF
(Stack Underflow) status bits. Register 4-2 shows the
STKPTR register. The value of the stack pointer can be
0 through 31. The stack pointer increments when val-
ues are pushed onto the stack and decrements when
values are popped off the stack. At Reset, the stack
pointer value will be ‘0’. The user may read and write
the stack pointer value. This feature can be used by a
Real-Time
Operating
System
for
return
stack
maintenance.
After the PC is pushed onto the stack 31 times (without
popping any values off the stack), the STKFUL bit is
set. The STKFUL bit can only be cleared in software or
by a POR.
The action that takes place when the stack becomes
full, depends on the state of the STVREN (Stack Over-
flow
Reset
Enable)
configuration
bit.
Refer
to
description of the device configuration bits. If STVREN
is set (default), the 31st push will push the (PC + 2)
value onto the stack, set the STKFUL bit and reset the
device. The STKFUL bit will remain set and the stack
pointer will be set to ‘0’.
If STVREN is cleared, the STKFUL bit will be set on the
31st push and the stack pointer will increment to 31.
Any additional pushes will not overwrite the 31st push
and STKPTR will remain at 31.
When the stack has been popped enough times to
unload the stack, the next pop will return a value of zero
to the PC and sets the STKUNF bit, while the stack
pointer remains at ‘0’. The STKUNF bit will remain set
until cleared in software or a POR occurs.
Note:
Returning a value of zero to the PC on an
underflow has the effect of vectoring the
program to the Reset vector, where the
stack conditions can be verified and
appropriate actions can be taken.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R5F562N8ADFB | 制造商:Renesas Electronics Corporation 功能描述:MCU 32BIT RX62N 144QFP 制造商:Renesas Electronics Corporation 功能描述:MCU,RX,32bit,100MHz,512KB Flash,LQFP144 制造商:Renesas Electronics Corporation 功能描述:MCU32Bit 165MIPS ROM512KRAM32K QFP144Pin |
| R5F562N8ADFB#V0 | 功能描述:MCU 32BIT FLASH 512KROM 144LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:RX600 標(biāo)準(zhǔn)包裝:96 系列:PIC® 16F 核心處理器:PIC 芯體尺寸:8-位 速度:20MHz 連通性:I²C，SPI 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，POR，PWM，WDT 輸入/輸出數(shù):11 程序存儲(chǔ)器容量:3.5KB（2K x 14） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:128 x 8 電壓 - 電源 (Vcc/Vdd):2.3 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 包裝:管件 |
| R5F562N8ADFP | 制造商:Renesas Electronics Corporation 功能描述:MCU 32BIT RX62N 100QFP 制造商:Renesas Electronics Corporation 功能描述:MCU, 32BIT, RX62N, 100QFP 制造商:Renesas Electronics Corporation 功能描述:MCU, 32BIT, RX62N, 100QFP; Controller Family/Series:RX600; Core Size:32bit; No. of I/O's:72; Supply Voltage Min:2.7V; Supply Voltage Max:3.6V; Digital IC Case Style:LQFP; No. of Pins:100; Program Memory Size:512KB; RAM Memory ;RoHS Compliant: Yes 制造商:Renesas Electronics Corporation 功能描述:MCU32Bit 165MIPS ROM512KRAM32K QFP100Pin |
| R5F562N8ADFP#V0 | 功能描述:MCU 32BIT FLASH 512KROM 100LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:RX600 標(biāo)準(zhǔn)包裝:96 系列:PIC® 16F 核心處理器:PIC 芯體尺寸:8-位 速度:20MHz 連通性:I²C，SPI 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，POR，PWM，WDT 輸入/輸出數(shù):11 程序存儲(chǔ)器容量:3.5KB（2K x 14） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:128 x 8 電壓 - 電源 (Vcc/Vdd):2.3 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 包裝:管件 |
| R5F562N8ADLE | 制造商:Renesas Electronics Corporation 功能描述:MCU 32BIT RX62N 145LGA 制造商:Renesas Electronics Corporation 功能描述:MCU, 32BIT, RX62N, 145LGA 制造商:Renesas Electronics Corporation 功能描述:MCU, 32BIT, RX62N, 145LGA, Controller Family/Series:RX600, Core Size:32bit, No. of I/O's:103, Supply Voltage Min:2.7V, Supply Voltage Max:3.6V, Digital IC Case Style:LGA, No. of Pins:145, Program Memory Size:512KB, RAM Memory , RoHS Compliant: Yes |
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