UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 10

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

Specifications of UPD78F0890GK(A)-GAJ-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 10
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

CHAPTER 7 16-BIT TIMER/EVENT COUNTERS 00 TO 03 ........................................................... 161
CHAPTER 8 8-BIT TIMER/EVENT COUNTERS 50 AND 51........................................................... 222
10
6.2 Configuration of Clock Generator ............................................................................................ 126
6.3 Registers Controlling Clock Generator.................................................................................... 128
6.4 System Clock Oscillator ............................................................................................................ 137
6.5 Clock Generator Operation ....................................................................................................... 141
6.6 Controlling Clock........................................................................................................................ 145
7.1 Functions of 16-Bit Timer/Event Counters 00 to 03................................................................ 161
7.2 Configuration of 16-Bit Timer/Event Counters 00 to 03 ......................................................... 162
7.3 Registers Controlling 16-Bit Timer/Event Counters 00 to 03................................................. 171
7.4 Operation of 16-Bit Timer/Event Counters 00 to 03 ................................................................ 192
7.5 Special Use of TM0n .................................................................................................................. 216
7.6 Cautions for 16-Bit Timer/Event Counters 00 to 03 ................................................................ 218
8.1 Functions of 8-Bit Timer/Event Counters 50 and 51............................................................... 222
8.2 Configuration of 8-Bit Timer/Event Counters 50 and 51 ........................................................ 224
8.3 Registers Controlling 8-Bit Timer/Event Counters 50 and 51................................................ 226
8.4 Operations of 8-Bit Timer/Event Counters 50 and 51 ............................................................. 231
8.5 Cautions for 8-Bit Timer/Event Counters 50 and 51 ............................................................... 239
6.4.1 X1 oscillator......................................................................................................................................137
6.4.2 XT1 oscillator....................................................................................................................................137
6.4.3 When subsystem clock is not used ..................................................................................................140
6.4.4 Internal high-speed oscillator............................................................................................................140
6.4.5 Internal low-speed oscillator .............................................................................................................140
6.4.6 Prescaler ..........................................................................................................................................140
6.6.1 Controlling high-speed system clock ................................................................................................145
6.6.2 Example of controlling internal high-speed oscillation clock .............................................................148
6.6.3 Example of controlling subsystem clock...........................................................................................150
6.6.4 Controlling internal low-speed oscillation clock ................................................................................152
6.6.5 Clocks supplied to CPU and peripheral hardware ............................................................................152
6.6.6 CPU clock status transition diagram.................................................................................................153
6.6.7 Condition before changing CPU clock and processing after changing CPU clock ...........................158
6.6.8 Time required for switchover of CPU clock and main system clock .................................................159
6.6.9 Conditions before clock oscillation is stopped ..................................................................................160
7.4.1 Interval timer operation.....................................................................................................................192
7.4.2 PPG output operations .....................................................................................................................195
7.4.3 Pulse width measurement operations ..............................................................................................198
7.4.4 External event counter operation......................................................................................................206
7.4.5 Square-wave output operation .........................................................................................................209
7.4.6 One-shot pulse output operation ......................................................................................................211
7.5.1 Rewriting CR01n during TM0n operation .........................................................................................216
7.5.2 Setting LVS0n and LVR0n ...............................................................................................................216
8.4.1 Operation as interval timer ...............................................................................................................231
8.4.2 Operation as external event counter ................................................................................................233
8.4.3 Square-wave output operation .........................................................................................................234
8.4.4 PWM output operation......................................................................................................................235
User’s Manual U17554EJ4V0UD