UPD17717 Datasheet, PDF (74/408 Pages) NEC – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DEDICATED HARDWARE FOR DIGITAL TUNING SYSTEM

µPD17717, 17718, 17719
Table 8-1. Peripheral Hardware Control Functions of Control Registers (7/8)
Peripheral
Control Register
Peripheral Hardware Control Function
At Reset
Clock
Hardware
Name
Address Read/ b3
Write ^b2 Symbol
b1
b0
Function
Set value
0
1
Power- WDT CE Stop
ON & SP reset
reset reset
Interrupt Timer 0 interrupt 39H R/W 0
Fixed to “0”
0
0 Retained Retained
request
0
0
IRQTM0 Detects timer 0 interrupt request No interrupt request Interrupt request
INT4 pin interrupt 3AH R/W INT4
Detects INT4 pin status
Low level High level U U U U
request
0
Fixed to “0”
0
0 Retained Retained
0
IRQ4
Detects INT4 pin interrupt request No interrupt request Interrupt request
INT3 pin interrupt 3BH R/W INT3
Detects INT3 pin status
Low level High level U U U U
request
0
Fixed to “0”
0
0 Retained Retained
0
IRQ3
Detects INT3 pin interrupt request No interrupt request Interrupt request
INT2 pin interrupt 3CH R/W INT2
Detects INT2 pin status
Low level High level U U U U
request
0
Fixed to “0”
0
0 Retained Retained
0
IRQ2
Detects INT2 pin interrupt request No interrupt request Interrupt request
INT1 pin interrupt 3DH R/W INT1
Detects INT1 pin status
Low level High level U U U U
request
0
Fixed to “0”
0
0 Retained Retained
0
IRQ1
Detects INT1 pin interrupt request No interrupt request Interrupt request
INT0 pin interrupt 3EH R/W INT0
Detects INT0 pin status
Low level High level U U U U
request
0
Fixed to “0”
0
0 Retained Retained
0
IRQ0
Detects INT0 pin interrupt request No interrupt request Interrupt request
CE pin interrupt 3FH R CE
Detects CE pin status
Low level High level U U U U
request
0
Fixed to “0”
0
0
0
0
CECNTSTT Detects CE reset counter status Stops
Operates
R/W IRQCE
Detects CE pin interrupt request No interrupt request Interrupt request 0
0
R
R
IF
FCG channel 20H R/W 0
Fixed to “0”
0
0
0
0
counter selection
0
FCGCH1
FCGCH0
Sets pin to be used as FCG
0
011
FCG FCG0 FCG1 Setting
not used pin pin prohibited
0
101
IF counter gate 21H R 0
Fixed to “0”
0
0
0
0
status detection
0
0
IFCGOSTT Detects IF counter gate status Closed
Open
U: Undefined
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