UPD78F1174AGF-GAT-AX Renesas Electronics America, UPD78F1174AGF-GAT-AX Datasheet - Page 296

• Manufacturer Part Number: UPD78F1174AGF-GAT-AX
• Description: MCU 16BIT 78K0R/KX3 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: 78K0R/Kx3r

Specifications of UPD78F1174AGF-GAT-AX

• Core Processor: 78K/0R
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: 3-Wire SIO, EBI/EMI, I²C, LIN, UART/USART
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 111
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

7.7.2 Operation as external event counter
(external event) is detected in the TImn pin. When a specified count value is reached, the event counter generates an
interrupt. The specified number of counts can be calculated by the following expression.
TCRmn loads the value of TDRmn again, and outputs INTTMmn.
294
The timer array unit can be used as an external event counter that counts the number of times the valid input edge
TCRmn operates as a down counter in the event counter mode.
When the channel start trigger bit (TSmn) is set to 1, TCRmn loads the value of TDRmn.
TCRmn counts down each time the valid input edge of the TImn pin has been detected. When TCRmn = 0000H,
After that, the above operation is repeated.
TOmn must not be used because its waveform depends on the external event and irregular.
TDRmn can be rewritten at any time. The new value of TDRmn becomes valid during the next count period.
TImn pin
Specified number of counts = Set value of TDRmn + 1
Remark
TSmn
Figure 7-42. Example of Basic Timing of Operation as External Event Counter
m: Unit number (m = 0, 1), n: Channel number (n = 0 to 7),
mn = 00 to 07, 10 to 13
INTTMmn
detection
TCRmn
TDRmn
Figure 7-41. Block Diagram of Operation as External Event Counter
Edge
TSmn
TEmn
TImn
0000H
3
CHAPTER 7 TIMER ARRAY UNIT
4 events
2
0003H
User’s Manual U18432EJ5V0UD
1
0
Timer counter
Data register
(TCRmn)
(TDRmn)
3
4 events
2
1
0
2
3 events
0002H
1
controller
Interrupt
0
2
1
Interrupt signal
(INTTMmn)