Renesas Hitachi H8S/2194 Series Hardware Manual page 643

(3) CTL Input Circuit
The CTL input pin has built-in an amplifier. Figure 28.4 shows the input circuit of CTL.
AMPON
(PB-CTL)
- +
-
CTL( ) CTL(+)
Rev. 2.0, 11/00, page 616 of 1037
AMPSHORT
(REC-CTL) CTLGR3 to 1
+
-
CTLREF CTLBias
Note: Be sure to set a capacitor between CTLAmp (o) and CTLSMT (i)
Figure 28.4 CTL Input Circuit
CTLFB
-
+
CTLFB CTLAmp(o)
Note
CTLGR0
PB-CTL(+)
PB-CTL(-)
CTLSMT(i)