HD64F2168 Datasheet, PDF (284/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

8.14.3 Port E Input Data Register (PEPIN)
PEPIN indicates the pin states of port E.
Bit Bit Name Initial Value R/W Description
7
PE7PIN Undefined* R Pin states can be read by performing a read cycle on
6
PE6PIN
Undefined* R
this register.
5
Pe5PIN
Undefined* R
This register is assigned to the same address as that
of PEDDR. When this register is written to, data is
4
PE4PIN Undefined* R _{written to PEDDR and the port E setting is then}
3
PE3PIN
Undefined* R
changed.
2
PE2PIN Undefined* R
1
PE1PIN Undefined* R
0
PE0PIN Undefined* R
Note: The initial value of these pins is determined in accordance with the state of pins PE7 to
PE0.
8.14.4 Pin Functions
Port E also functions as an LPC input/output. The pin function is switched with LPC enabled or
disabled. The LPC module is disabled when the LPC1E, LPC2E, and LPC3E bits in HICR0 of
LPC are all 0.
• PE7/SERIRQ
The pin function is switched as shown below according to the LPC enabled/disabled and the
PE7DDR.
LPC
PE7DDR
Pin Function
0
PE7 input pin
Disabled
1
PE7 output pin
Enabled

SERIRQ input/output pin
• PE6/LCLK
The pin function is switched as shown below according to the LPC enabled/disabled and the
PE6DDR.
LPC
PE6DDR
Pin Function
0
PE6 input pin
Disabled
1
PE6 output pin
Enabled

LCLK input pin
Rev. 3.00, 03/04, page 244 of 830