UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 222

• 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

8.1 Functions of 8-Bit Timer/Event Counters 50 and 51
222
TI50/TO50/
8-bit timer/event counters 50 and 51 have the following functions.
• Interval timer
• External event counter
• Square-wave output
• PWM output
Figures 8-1 and 8-2 show the block diagrams of 8-bit timer/event counters 50 and 51.
Notes 1.
Timer clock selection
register 50 (TCL50)
f
TCL502 TCL501 TCL500
PRS
f
f
f
PRS
PRS
PRS
f
PRS
P17
f
/2
PRS
/2
/2
/2
2.
/2
13
2
6
8
Timer output F/F
PWM output F/F
3
CHAPTER 8 8-BIT TIMER/EVENT COUNTERS 50 AND 51
8-bit timer
counter 50 (TM50)
8-bit timer compare
register 50 (CR50)
Figure 8-1. Block Diagram of 8-Bit Timer/Event Counter 50
Selector
Match
Clear
OVF
8-bit timer mode control
register 50 (TMC50)
TCE50 TMC506 LVS50 LVR50 TMC501 TOE50
User’s Manual U17554EJ4V0UD
Internal bus
Internal bus
R
S
Selector
INV
S
R
Note 2
Note 1
Q
Invert
level
INTTM50
To TMH0
To UART0
To UART6
Output latch
(P17)
PM17
TO50/TI50/
P17