tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 214

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Input/Output Ports
7.16 Port F (PF0 through PF7)
The port F is a general-purpose, 8-bit input/output port. For this port, inputs and outputs can be specified in units
of bits by using the control register PFCR and the function registers PFFC1 and PFFC2. A reset allows all bits of
the output latch PF to be set to "1," all bits of PFCR, PFFC1 and PFFC2 to be cleared to "0," and the port F to be
put in input mode.
Input is disabled right after reset. To enable input, set the corresponding bit of PFIE to “1”.
Besides the input/output port function, the port F inputs external clock source of 32-bit time base timer and
performs the key-on wake-up input function, PF1 through PF3 and PC7 perform a 32-bit timer compare output
function and PC4 through PC6 perform SBI input/ output function..
DREQ0,DREQ4
PF read
(function control)
(function control)
(output control)
(output control)
(input control)
(output latch)
PFPUP
PFFC1
PFFC2
PFCR
PFIE
PF
Drive disabled during
STOP/ RESET
Fig. 7.47 Port F (PF0, PF2)
TMP19A44 (rev1.3) 7-66
0
1
KEY16,18
PORT KEEP
0
1
0
1
TMP19A44
2010-04-01
Port F
PF0,PF2
(KEY16/DREQ0,
KEY18/DREQ4)
RESET