PSD4235G2V-10U STMICROELECTRONICS [STMicroelectronics], PSD4235G2V-10U Datasheet - Page 42

• Manufacturer Part Number: PSD4235G2V-10U
• Description: Flash In-System Programmable (ISP) Peripherals for 16-bit MCUs
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

PSD4256G6V
Output Macrocell (OMC)
Eight of the Output Macrocells (OMC) are con-
nected to Ports A pins and are named as McellA0-
McellA7. The other eight Macrocells are connect-
ed to Ports B pins and are named as McellB0-
McellB7.
The Output Macrocell (OMC) architecture is
shown in Figure 15, page 44. As shown in the fig-
ure, there are native product terms available from
the AND Array, and borrowed product terms avail-
able (if unused) from other Output Macrocells
(OMC). The polarity of the product term is con-
trolled by the XOR gate. The Output Macrocell
(OMC) can implement either sequential logic, us-
ing the flip-flop element, or combinatorial logic.
Table 33. Output Macrocell Port and Data Bit Assignments
Note: 1. D7-D0 are used for loading or reading in 8-bit mode.
42/100
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
Macrocell
McellA0
McellA1
McellA2
McellA3
McellA4
McellA5
McellA6
McellA7
McellB0
McellB1
McellB2
McellB3
McellB4
McellB5
McellB6
McellB7
Output
Assignment
Port A0
Port A1
Port A2
Port A3
Port A4
Port A5
Port A6
Port A7
Port B0
Port B1
Port B2
Port B3
Port B4
Port B5
Port B6
Port B7
Port
Native Product
Terms
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
Product Terms
The multiplexer selects between the sequential or
combinatorial logic outputs. The multiplexer output
can drive a port pin and has a feedback path to the
AND Array inputs.
The flip-flop in the Output Macrocell (OMC) block
can be configured as a D, T, JK, or SR type in the
PSDsoft program. The flip-flop’s clock, preset, and
clear inputs may be driven from a product term of
the AND Array. Alternatively, the external CLKIN
(PD1) signal can be used for the clock input to the
flip-flop. The flip-flop is clocked on the rising edge
of CLKIN (PD1). The preset and clear are active
High inputs. Each clear input can use up to two
product terms.
Maximum
Borrowed
6
6
6
6
6
6
6
6
5
5
5
5
6
6
6
6
16-bit MCU
Loading or
Reading
D10
D11
D12
D13
D14
D15
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
(1)
Motorola 16-bit
Loading or
Reading
MCU for
D10
D11
D12
D13
D14
D15
D8
D9
D0
D1
D2
D3
D4
D5
D6
D7