NEC switch User Manual
Page 25
CHAPTER 1 GENERAL
User’s Manual U12978EJ3V0UD
25
Series for ASSP
Timer
V
DD
Function
Subseries
ROM
Capacity
(Bytes)
8-Bit 16-Bit Watch WDT
8-Bit
A/D
10-Bit
A/D
Serial Interface
I/O
MIN.Value
Remarks
USB
µPD789800
8 K
2 ch
−
−
1 ch
−
−
2 ch (USB: 1ch)
31
4.0 V
−
Inverter
control
µPD789842
8 K to 16 K 3 ch Note 1 1 ch
1 ch
8 ch
−
1 ch (UART: 1ch)
30
4.0 V
−
On-chip
bus
controller
µPD789850
16 K
1 ch
1 ch
−
1 ch
4 ch
−
2 ch (UART: 1ch)
18
4.0 V
−
µPD789861
1.8 V
RC-oscillation
version,
on-chip
EEPROM
µPD789860
4 K
2 ch
−
−
1 ch
−
−
−
14
Keyless
entry
µPD789862
16 K
1 ch
2 ch
1 ch (UART: 1ch)
22
On-chip
EEPROM
VFD
drive
µPD789871
4 K to 8 K 3 ch
−
1 ch
1 ch
−
−
1 ch
33 2.7 V
−
Meter
control
µPD789881
16 K
2 ch
1 ch
−
1 ch
−
−
1 ch (UART: 1 ch)
28 2.7 V
Note 2
−
Notes 1. 10-bit timer: 1 channel
2. Flash memory version: 3.0 V