UPD78F9221CS-CAC-A Renesas Electronics America, UPD78F9221CS-CAC-A Datasheet - Page 98

• Manufacturer Part Number: UPD78F9221CS-CAC-A
• Description: MCU 8BIT 2KB FLASH 20PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9221CS-CAC-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

96
(4) Prescaler mode register 00 (PRM00)
This register is used to set the 16-bit timer counter 00 (TM00) count clock and the TI000, TI010 pin input valid
edges.
PRM00 is set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets the value of PRM00 to 00H.
Remarks 1. f
Note The external clock requires a pulse longer than two cycles of the internal count clock (f
Address: FF61H After reset: 00H R/W
Symbol
PRM00
2. ( ): f
XP
PRM001
ES110
ES110
ES010
: Oscillation frequency of clock supplied to peripheral hardware
7
0
0
1
1
0
0
1
1
0
0
1
1
XP
Figure 6-8. Format of Prescaler Mode Register 00 (PRM00)
= 10 MHz
PRM000
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
ES100
ES100
ES000
6
0
1
0
1
0
1
0
1
0
1
0
1
Falling edge
Rising edge
Setting prohibited
Both falling and rising edges
Falling edge
Rising edge
Setting prohibited
Both falling and rising edges
f
f
f
TI000 pin valid edge
XP
XP
XP
User’s Manual U16898EJ6V0UD
ES010
/2
/2
(10 MHz)
2
8
5
(2.5 MHz)
(39.06 kHz)
ES000
4
Note
TI010 pin valid edge selection
TI000 pin valid edge selection
Count clock selection
3
0
2
0
PRM001
1
XP
).
PRM000
0