參數(shù)資料
型號: ATTINY15L-1PU
廠商: Atmel
文件頁數(shù): 85/85頁
文件大?。?/td> 0K
描述: IC MCU AVR 1K FLASH 1.6MHZ 8-DIP
標準包裝: 50
系列: AVR® ATtiny
核心處理器: AVR
芯體尺寸: 8-位
速度: 1.6MHz
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 6
程序存儲器容量: 1KB(512 x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 64 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
數(shù)據(jù)轉換器: A/D 4x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 8-DIP(0.300",7.62mm)
包裝: 管件
9
ATtiny15L
1187H–AVR–09/07
Constant byte address is specified by the Z-register contents. The 15 MSBs select word
address (0 - 511), and LSB selects low byte if cleared (LSB = 0) or high byte if set
(LSB = 1).
Subroutine and Interrupt
Hardware Stack
The ATtiny15L uses a 3-level-deep Hardware Stack for subroutines and interrupts. The
Hardware Stack is nine bits wide and stores the Program Counter (PC) return address
while subroutines and interrupts are executed.
RCALL instructions and interrupts push the PC return address onto Stack level 0, and
the data in the other Stack levels 1 - 2 are pushed one level deeper in the Stack. When
a RET or RETI instruction is executed the returning PC is fetched from Stack level 0,
and the data in the other Stack levels 1 - 2 are popped one level in the Stack.
If more than three subsequent subroutine calls or interrupts are executed, the first val-
ues written to the Stack are overwritten. Pushing four return addresses A1, A2, A3, and
A4 followed by four subroutine or interrupt returns, will pop A4, A3, A2, and once more
A2 from the Hardware Stack.
The EEPROM Data
Memory
The ATtiny15L contains 64 bytes of data EEPROM memory. It is organized as a sepa-
rate data space, in which single bytes can be read and written. The EEPROM has an
endurance of at least 100,000 write/erase cycles. The access between the EEPROM
and the CPU is described on page 36, specifying the EEPROM Address Register, the
EEPROM Data Register, and the EEPROM Control Register.
Memory Access and
Instruction Execution Timing
This section describes the general access timing concepts for instruction execution and
internal memory access.
The AVR CPU is driven by the System Clock , directly generated from the external
clock crystal for the chip. No internal clock division is used.
Figure 10 shows the parallel instruction fetches and instruction executions enabled by
the Harvard architecture and the fast-access Register File concept. This is the basic
pipelining concept to obtain up to 1 MIPS per MHz with the corresponding unique results
for functions per cost, functions per clocks, and functions per power-unit.
Figure 10. The Parallel Instruction Fetches and Instruction Executions
Figure 11 shows the internal timing concept for the Register File. In a single clock cycle
an ALU operation using two register operands is executed, and the result is stored back
to the destination register.
System Clock
1st Instruction Fetch
1st Instruction Execute
2nd Instruction Fetch
2nd Instruction Execute
3rd Instruction Fetch
3rd Instruction Execute
4th Instruction Fetch
T1
T2
T3
T4
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