AT94K05AL ATMEL Corporation, AT94K05AL Datasheet - Page 92

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AT94K05AL

Manufacturer Part Number
AT94K05AL
Description
Fpslic Devices Combine 5K Gates of Atmel's Patented AT40K Fpga Architecture, a 20 Mips Avr 8-bit Risc Microprocessor Core, Numerous Fixed Microcontroller Peripheries And up to 36K Bytes of Program And Data SRAM.
Manufacturer
ATMEL Corporation
Datasheet

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92
AT94K Series FPSLIC
Figure 52. Effects of Unsynchronized OCR Latching in Up/Down Mode
Note:
Figure 53. Effects of Unsynchronized OCR Latching in Overflow Mode.
Note:
During the time between the write and the latch operation, a read from the Output Compare
Registers will read the contents of the temporary location. This means that the most recently
written value always will read out of OCR0 and OCR2.
When the Output Compare Register contains $00 or $FF, and the up/down PWM mode is
selected, the output PE1(OC0/PWM0)/PE3(OC2/PWM2) is updated to Low or High on the
next compare match according to the settings of COMn1/COMn0. This is shown in Table 25.
In overflow PWM mode, the output PE1(OC0/PWM0)/PE3(OC2/PWM2) is held Low or High
only when the Output Compare Register contains $FF.
Compare Value Changes
1. n = 0 or 2
1. n = 0 or 2
Compare Value Changes
Unsynchronized OCn
Synchronized OCn
Synchronized OCn
Unsynchronized OCn
(1)
(1)
(1)
Latch
Latch
Latch
(1)
Latch
Compare Value Changes
Glitch
Compare Value Changes
Glitch
Counter Value
Compare Value
PWM Output OCn
Counter Value
Compare Value
PWM Output OCn
Counter Value
Compare Value
PWM Output OCn
Counter Value
Compare Value
PWM Output OCn
Rev. 1138F–FPSLI–06/02
(1)
(1)
(1)
(1)

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