M306N4FGTFP Renesas Electronics America, M306N4FGTFP Datasheet - Page 140

• Manufacturer Part Number: M306N4FGTFP
• Description: IC M16C MCU FLASH 100QFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/6Nr

Specifications of M306N4FGTFP

• Core Processor: M16C/60
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, I²C, IEBus, SIO, UART/USART
• Peripherals: DMA, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 26x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

M16C/6N Group (M16C/6N4)
Rev.2.40
REJ09B0009-0240
Figure 13.10 Two-phase Pulse (A Phase and B Phase) and Z Phase
13.1.2.1 Counter Initialization by Two-Phase Pulse Signal Processing
This function initializes the timer count value to 0 by Z-phase (counter initialization) input during two-
phase pulse signal processing.
This function can only be used in timer A3 event counter mode during two-phase pulse signal processing,
free-running type, x4 processing, with Z-phase entered from the ZP pin.
Counter initialization by Z-phase input is enabled by writing 0000h to the TA3 register and setting the
TAZIE bit in the ONSF register to 1 (Z-phase input enabled).
Counter initialization is accomplished by detecting Z-phase input edge. The active edge can be selected
to be the rising or falling edge by using the POL bit in the INT2IC register. The Z-phase pulse width
applied to the INT2 pin must be equal to or greater than one clock cycle of the timer A3 count source.
The counter is initialized at the next count timing after recognizing Z-phase input. Figure 13.10 shows
the relationship between the two-phase pulse (A phase and B phase) and the Z-phase.
If timer A3 overflow or underflow coincides with the counter initialization by Z-phase input, a timer A3
interrupt request is generated twice in succession. Do not use the timer A3 interrupt when using this
function.
TA3IN
(B phase)
Timer A3
T3OUT
(A phase)
ZP
NOTE:
Count source
Apr 14, 2006
1. This timing diagram is for the case where the POL bit in the INT2IC register = 1 (rising edge).
(1)
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m
m+1
Input equal to or greater than one clock cycle
of count source
1
2
3
4
5
13. Timers