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參數(shù)資料
| 型號： | COP8SAA716M8/NOPB |
| 廠商： | National Semiconductor |
| 文件頁數(shù)： | 14/62頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU OTP 8BIT 1K 16-SOIC |
| 標(biāo)準(zhǔn)包裝： | 45 |
| 系列： | COP8™ 8SA |
| 核心處理器： | COP8 |
| 芯體尺寸： | 8-位 |
| 速度： | 10MHz |
| 連通性： | Microwire/Plus（SPI） |
| 外圍設(shè)備： | POR，PWM，WDT |
| 輸入/輸出數(shù)： | 12 |
| 程序存儲器容量： | 1KB（1K x 8） |
| 程序存儲器類型： | OTP |
| RAM 容量： | 64 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 16-SOIC（0.295"，7.50mm 寬） |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1281 (CN2011-ZH PDF) |
| 其它名稱： | *COP8SAA716M8 *COP8SAA716M8/NOPB COP8SAA716M8 |
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6.0 Functional Description (Continued)
6.9 CONTROL REGISTERS
CNTRL Register (Address X'00EE)
T1C3
T1C2
T1C1
T1C0
MSEL
IEDG
SL1
SL0
Bit 7
Bit 0
The Timer1 (T1) and MICROWIRE/PLUS control register
contains the following bits:
T1C3
Timer T1 mode control bit
T1C2
Timer T1 mode control bit
T1C1
Timer T1 mode control bit
T1C0
Timer T1 Start/Stop control in timer
modes 1 and 2, T1 Underflow Interrupt
Pending Flag in timer mode 3
MSEL
Selects G5 and G4 as MICROWIRE/PLUS
signals SK and SO respectively
IEDG
External interrupt edge polarity select
(0 = Rising edge, 1 = Falling edge)
SL1 & SL0
Select the MICROWIRE/PLUS clock divide
by (00 = 2, 01 = 4, 1x = 8)
PSW Register (Address X'00EF)
HC
C
T1PNDA
T1ENA
EXPND
BUSY
EXEN
GIE
Bit 7
Bit 0
The PSW register contains the following select bits:
HC
Half Carry Flag
C
Carry Flag
T1PNDA Timer T1 Interrupt Pending Flag (Autoreload
RA in mode 1, T1 Underflow in Mode 2, T1A
capture edge in mode 3)
T1ENA
Timer T1 Interrupt Enable for Timer Underflow
or T1A Input capture edge
EXPND
External interrupt pending
BUSY
MICROWIRE/PLUS busy shifting flag
EXEN
Enable external interrupt
GIE
Global interrupt enable (enables interrupts)
The Half-Carry flag is also affected by all the instructions that
affect the Carry flag. The SC (Set Carry) and R/C (Reset
Carry) instructions will respectively set or clear both the carry
flags. In addition to the SC and R/C instructions, ADC,
SUBC, RRC and RLC instructions affect the Carry and Half
Carry flags.
ICNTRL Register (Address X'00E8)
Reserved
LPEN
T0PND
T0EN
WPND
WEN
T1PNDB
T1ENB
Bit 7
Bit 0
The ICNTRL register contains the following bits:
Reserved This bit is reserved and should to zero
LPEN
L Port Interrupt Enable (Multi-Input Wakeup/
Interrupt)
T0PND
Timer T0 Interrupt pending
T0EN
Timer T0 Interrupt Enable (Bit 12 toggle)
WPND
MICROWIRE/PLUS interrupt pending
WEN
Enable MICROWIRE/PLUS interrupt
T1PNDB
Timer T1 Interrupt Pending Flag for T1B cap-
ture edge
T1ENB
Timer T1 Interrupt Enable for T1B Input cap-
ture edge
7.0 Timers
The device contains a very versatile set of timers (T0, T1).
Timer T1 and associated autoreload/capture registers power
up containing random data.
7.1 TIMER T0 (IDLE TIMER)
The device supports applications that require maintaining
real time and low power with the IDLE mode. This IDLE
mode support is furnished by the IDLE timer T0. The Timer
T0 runs continuously at the fixed rate of the instruction cycle
clock, t
C. The user cannot read or write to the IDLE Timer T0,
which is a count down timer.
The Timer T0 supports the following functions:
Exit out of the Idle Mode (See Idle Mode description)
WATCHDOG logic (See WATCHDOG description)
Start up delay out of the HALT mode
Timing the width of the internal power-on-reset
The IDLE Timer T0 can generate an interrupt when the
twelfth bit toggles. This toggle is latched into the T0PND
pending flag, and will occur every 4.096 ms at the maximum
clock frequency (t
C = 1 s). A control flag T0EN allows the
interrupt from the twelfth bit of Timer T0 to be enabled or
disabled. Setting T0EN will enable the interrupt, while reset-
ting it will disable the interrupt.
7.2 TIMER T1
One of the main functions of a microcontroller is to provide
timing and counting capability for real-time control tasks. The
COP8 family offers a very versatile 16-bit timer/counter
structure, and two supporting 16-bit autoreload/capture reg-
isters (R1A and R1B), optimized to reduce software burdens
in real-time control applications. The timer block has two pins
associated with it, T1A and T1B. Pin T1A supports I/O re-
quired by the timer block, while pin T1B is an input to the
timer block.
The timer block has three operating modes: Processor Inde-
pendent PWM mode, External Event Counter mode, and
Input Capture mode.
The control bits T1C3, T1C2, and T1C1 allow selection of the
different modes of operation.
7.2.1 Mode 1. Processor Independent PWM Mode
One of the timer’s operating modes is the Processor Inde-
pendent PWM mode. In this mode, the timer generates a
“Processor Independent” PWM signal because once the
timer is setup, no more action is required from the CPU
which translates to less software overhead and greater
throughput. The user software services the timer block only
when the PWM parameters require updating. This capability
is provided by the fact that the timer has two separate 16-bit
reload registers. One of the reload registers contains the
“ON” timer while the other holds the “OFF” time. By contrast,
a microcontroller that has only a single reload register re-
quires an additional software to update the reload value
(alternate between the on-time/off-time).
The timer can generate the PWM output with the width and
duty cycle controlled by the values stored in the reload
registers. The reload registers control the countdown values
and the reload values are automatically written into the timer
when it counts down through 0, generating interrupt on each
reload. Under software control and with minimal overhead,
COP8SA
Family
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